Triazine Compounds: Structural Features, Classification Logic, Typical Applications, and Key Considerations for Research Selection

I. Why Triazines Have Become an Important Scaffold Across Multiple Fields

Triazines are a class of six-membered aromatic nitrogen-containing heterocycles formed by replacing three carbon atoms in a benzene ring with three nitrogen atoms. Accordingly, they exist as three regioisomers: 1,2,3-triazine, 1,2,4-triazine, and 1,3,5-triazine. In a broad sense, triazine derivatives are compounds that retain the triazine core while undergoing substitution, annulation, oxidation, or other functionalization. Among them, 1,3,5-triazine (s-triazine) is usually the main focus in research and industrial discussions because of its symmetric structure, regular substitution pattern, ease of modification, and especially broad range of applications.

 

Regioisomer	Common alias	Characteristic features	Common applications
1,2,3-Triazine	v-triazine	Three nitrogen atoms arranged consecutively; relatively less studied	Synthetic methodology; inverse electron-demand Diels–Alder reactions
1,2,4-Triazine	a-triazine	Common in medicinal chemistry and fused nitrogen-containing scaffolds	Medicinal chemistry; functional heterocycles
1,3,5-Triazine	s-triazine	The most symmetric isomer; the 2-, 4-, and 6-positions are best suited for modular modification	Industrial chemistry; agrochemicals; resins; materials; medicinal chemistry

Triazines and their derivatives are not confined to any single niche. Instead, they have remained active across multiple fields for a long time. In the early period, chlorinated triazines and amino triazines drove their use in the dye, agrochemical, and resin industries. Later, because of the electron-accepting character of the triazine ring, its nitrogen-rich nature, and its multiple modifiable positions, triazines further entered research areas such as medicinal chemistry, catalysis, adsorbent materials, organic electronic materials, and covalent triazine frameworks (CTFs). The importance of triazines lies not only in the fact that they are nitrogen-containing heterocycles, but also in their ability to serve, in different contexts, as linking scaffolds, electronic regulators, and functional-site-bearing units at the same time.

II. What Structural Features Do Triazines Have?

2.1 Triazines Are Planar Aromatic Heterocycles, but More Electron-Deficient than Benzene

Triazines are still aromatic six-membered rings and therefore retain the basic characteristics of planarity, rigidity, and conjugation. However, because the ring contains three nitrogen atoms, the ring carbons are overall more electron-deficient. This means that triazines are often used as electron-accepting cores; in terms of reactivity, it is usually triazine derivatives bearing suitable leaving groups—especially halogenated triazines—that are more amenable to nucleophilic aromatic substitution, rather than being understood in the same way as ordinary electron-rich aromatic rings.

2.2 The High Symmetry of 1,3,5-Triazine Makes It Well Suited as a “Central Node”

One important advantage of 1,3,5-triazine is its C3 symmetry. This makes it highly suitable for connecting three functional arms to construct star-shaped molecules, porous frameworks, molecular cages, donor–acceptor optoelectronic materials, or multivalent recognition systems. In other words, triazines often directly serve as the “central scaffold” in molecular design.

2.3 The Carbon Positions on the Triazine Ring Are Often “Programmable” Sites for Modification

For 1,3,5-triazines, the 2-, 4-, and 6-positions are the most common modification sites. The literature repeatedly emphasizes that these three positions can be readily used to tune physicochemical properties, biological activity, and material performance through substitution. Therefore, the triazine scaffold is particularly suitable for “series-based structural optimization,” especially in the parallel design of drug leads, ligands, functional monomers, and materials monomers.

2.4 Multiple Nitrogen Atoms Provide Not Only “Polarity,” but Also Recognition and Coordination Value

The nitrogen atoms on the triazine ring can act as hydrogen-bond acceptors and can also participate in metal coordination or anchor metal sites. This is particularly important in porous materials and catalytic systems: triazine units can increase the nitrogen content of a material, help immobilize metal active centers, and improve gas adsorption, catalytic, and electrochemical performance.

2.5 A Typical Example: Why Cyanuric Chloride Is the Most Classical Synthetic Starting Point in Triazine Chemistry

Cyanuric chloride (2,4,6-trichloro-1,3,5-triazine) is not considered classical simply because it “has three chlorines.” Rather, its importance comes from the fact that these three chlorines are attached to an electron-deficient, symmetric triazine ring that can undergo sequential substitution. The literature and experimental methodology show that its three chlorines can usually be substituted in a temperature-stepwise manner: the first step is often completed at around low temperature, the second near room temperature, and the third usually requires a higher temperature or reflux conditions. This feature makes cyanuric chloride particularly suitable for installing different fragments step by step onto the same central scaffold.

Accordingly, in a specific molecule, the triazine ring often plays the following roles:

1. It provides a rigid and well-defined three-way connecting core;

2. Its electron-deficient character helps make substitution reactions more controllable;

3. Through the stepwise introduction of different substituents, it can simultaneously tune polarity, steric bulk, recognition ability, and downstream functions.

This is also why cyanuric chloride has long been used as an important precursor for dyes, agrochemicals, pharmaceutical intermediates, and coupling agents.

III. How Should Triazines and Their Derivatives Be Classified?

Classification dimension	Typical category	Representative examples	How to understand it
By scaffold	1,2,3- / 1,2,4- / 1,3,5-triazines	Monocyclic triazines and their substituted derivatives	First distinguish the regioisomer, then discuss the properties
By reactivity	Chlorinated triazines	Cyanuric chloride	Focus on leaving groups, sequential substitution, and linking capability
By functional group	Amino triazines	Melamine	Focus on resin formation, hydrogen bonding, and crosslinking ability
By application type	Agrochemical triazines	Atrazine; simazine	Focus on biological activity, environmental behavior, and regulation
By tautomerism and subsequent functionalization	Triazine-2,4,6-triol/trione systems and their isocyanuric acid derivatives	Cyanuric acid; trichloroisocyanuric acid	Focus on hydroxy/keto tautomerism, chlorine-release behavior, stability, and disinfection/industrial applications
By higher-order functional materials	Triazine-based porous frameworks; electronic materials	CTFs; triazine acceptor materials	Focus on electron-accepting character, nitrogen-rich scaffolds, and pore structure
By bioactive scaffold	Diaminotriazines; fused triazines; benzotriazine dioxides	Cycloguanil-type scaffolds; lamotrigine; tirapazamine research scaffolds	Focus on pharmacophore arrangement and target-binding mode

IV. Typical Applications and Roles of Triazines and Their Derivatives

Field	Common representatives	Core role played by triazines
Fine synthesis and coupling chemistry	Cyanuric chloride; fluorinated triazines	Serve as trifunctional linking scaffolds, facilitating stepwise assembly of different nucleophilic fragments
Dyes and surface functionalization	Reactive-dye intermediates	Provide controllable reactive sites, allowing dyes to form stable linkages with fibers or substrates
Agricultural chemistry	Triazine herbicides such as atrazine and simazine	Serve as classical herbicidal scaffolds acting on photosynthesis-related targets
Resins, laminates, and coatings	Melamine; melamine–formaldehyde resins	Form thermosetting networks and improve surface hardness, heat resistance, and application stability
Medicinal chemistry and lead discovery	Diaminotriazines; 1,2,4-triazines; benzotriazine dioxides	Provide a well-defined nitrogen arrangement, tunable polarity, and favorable scaffold rigidity
Porous materials, catalysis, and energy storage	CTFs; triazine-based electronic materials	Provide nitrogen-rich scaffolds, metal-anchoring sites, electron-accepting cores, and porous networks

V. When Should Triazines and Their Derivatives Be Considered First?

Research need / use scenario	Why triazines may be considered first
A regular, symmetric central scaffold capable of three-directional extension is needed	1,3,5-Triazine has clear symmetry and is well suited to serve as a three-way connecting core
Multiple fragments need to be installed stepwise onto the same scaffold	Chlorinated triazines can achieve stepwise nucleophilic substitution under controlled conditions and are suitable for sequential derivatization
An electron-deficient aromatic core is needed	Triazines are overall electron-deficient and are often used as electron-accepting aromatic scaffolds; triazine derivatives bearing leaving groups are also suitable for nucleophilic aromatic substitution
A nitrogen-rich, porous framework node capable of anchoring metals is needed	Triazine units are favorable for constructing nitrogen-rich porous networks and provide metal-anchoring sites
Scaffold optimization is needed in medicinal chemistry	The 2-, 4-, and 6-positions allow parallel modification and are well suited for structure–activity relationship exploration
An industrially accessible starting scaffold with a relatively clear scale-up path is needed	Starting materials such as cyanuric chloride and melamine are mature in supply and supported by relatively rich application and scale-up experience

VI. Points to Note When Selecting or Using Triazines

6.1 First Clarify Which Type of “Triazine” Is Being Discussed

“Triazine derivatives” are not a family with uniform properties. Cyanuric chloride, melamine, atrazine, isocyanurate-related compounds, diaminotriazines, and porous triazine frameworks are all related to the triazine scaffold, but the key points of interest are entirely different: some are evaluated for leaving-group reactivity, some for crosslinking ability, some for biological activity, and some for pore structure and electronic properties. If the type is not distinguished at the outset, subsequent discussion can easily become confusing.

6.2 The “Sequential Substitution” of Chlorinated Triazines Is Very Useful, but Also Highly Dependent on Condition Control

The greatest advantage of chlorinated triazines such as cyanuric chloride is that they can be substituted stepwise. At the same time, this is exactly what requires careful operational control: temperature, base, solvent, and the order of addition can all affect whether the product is mono-, di-, or tri-substituted. Many methodology papers emphasize that low-temperature control in the first step is particularly critical; otherwise, over-substitution or diminished selectivity can easily occur.

6.3 The “Use Logic” of Different Triazine Categories Is Not the Same

Melamine is oriented toward resins and crosslinking; atrazine toward herbicidal activity; CTFs toward nitrogen-rich porous networks; and medicinal triazines toward target recognition and the tuning of pharmacokinetic properties. In other words, the selection logic for “triazines used in resins” cannot simply be applied directly to “triazines used in pharmaceuticals.”

6.4 In Agricultural and Environmental Contexts, Special Attention Must Be Paid to Regulations and Residue Issues

Triazine herbicides have a long history, but environmental and regulatory issues have always been important. Taking atrazine as an example, its current status in the EU Pesticides Database is Not approved, while the U.S. EPA is still in the process of registration review and risk-management updates. In 2024, the EPA updated the CE-LOC used for aquatic-plant risk assessment to 9.7 µg/L, and subsequently continued revising related mitigation measures while also initiating biological-opinion procedures associated with endangered-species assessment. Therefore, whenever herbicide use, environmental analysis, or regulatory judgment is involved, one must not look only at chemical structure, but must also verify the specific region, time point, and use scenario.

6.5 In Medicinal Chemistry and Materials Design, Triazines Are a “Good Scaffold,” but Not “Automatically Effective”

Triazines are advantageous for building well-defined scaffolds, introducing multiple substitution sites, and tuning electronic properties, but they do not automatically guarantee high activity or high performance. In medicinal chemistry, structure–activity relationships, selectivity, and ADME still need to be validated step by step; in materials chemistry, pore structure, energy-level matching, crystallinity, processability, and stability still need to be examined.

VII. Product Guide to Triazines and Their Derivatives: Quickly Locate Tables 1–5 by Research Task

Research task / experimental need	Recommended table to consult first	Why it is appropriate to consult first
To first understand the triazine parent core itself, or to study triazine basic structure, substitution patterns, and reactivity	Table 1	Table 1 concentrates on the triazine parent core, amino triazines, and closely related nitrogen-rich precursors, making it the most suitable starting point for understanding the structural chemistry and basic reactivity of triazines from the scaffold itself.
To study melamine-, guanamine-, or amino-triazine-related resins or nitrogen-rich precursors	Table 1	The triaminotriazine, diaminotriazine, acetoguanamine, benzoguanamine, and related entries in Table 1 are more directly aligned with the selection needs of amino resins, nitrogen-rich materials, and multi-hydrogen-bond building units.
To study carbon nitride materials or photocatalyst precursors related to the g-C3N4, heptazine, or melam/melem route	Table 1	Table 1 includes nitrogen-rich condensed precursors ranging from melamine to melam- and melem-type species, making it more suitable for research on carbon nitride semiconductors, photocatalysis, and highly nitrogen-rich polymerization pathways.
To use a “reactive triazine” for further attachment of amines, alcohols, or thiols and build multiply substituted triazine scaffolds	Table 2	Entries such as cyanuric chloride and CDMT in Table 2 are typical activated triazine building blocks, suitable for stepwise nucleophilic substitution and subsequent derivatization.
To perform amidation, esterification, carboxylic-acid activation, or bioconjugation, especially under mild or aqueous conditions	Table 2	CDMT and DMTMM in Table 2 are the triazine-based activating/coupling reagents most directly relevant to these tasks and are more practically useful than searching other tables for a triazine scaffold alone.
To conduct FRAP assays, Fe²⁺ color development, spectrophotometric metal-ion analysis, or coordination-chemistry studies	Table 2	Table 2 includes classical analytical ligands and chromogenic reagents such as TPTZ and PDT, which are among the most commonly used triazine derivatives for metal analysis and coordination studies.
To work on OLEDs, optoelectronic materials, COFs, or other organic functional materials and need aromatic triazine acceptor scaffolds or high-purity materials monomers	Table 2	The aryl triazines and crosslinkable triazines in Table 2 are more oriented toward materials chemistry and are suitable for electron-accepting scaffolds, thermosetting crosslinking, and functional polymer systems.
To study disinfectants, water treatment, available-chlorine release, or isocyanurate-related systems	Table 3	Table 3 focuses on cyanuric acid/isocyanurate systems and chlorinated derivatives, which are the most directly relevant to disinfection, water treatment, and available-chlorine behavior.
To study melamine–cyanuric acid systems, flame retardancy, heat resistance, or engineering-plastics formulations	Table 3	Melamine cyanurate, THEIC, and related entries in Table 3 are more typical and practically relevant for flame-retardant and heat-resistant materials formulations.
To monitor melamine-related by-products, impurity profiles, migration analysis, or associated method development	Table 3	In addition to cyanuric acid itself, Table 3 also includes related compounds such as ammelide and ammeline, making it more suitable for combined analysis and impurity control of melamine-related species.
To carry out pharmacology, medicinal chemistry, or mechanistic studies and identify triazine molecules with clearly defined bioactivity	Table 4	Table 4 focuses on known drugs or bioactive triazines and is therefore suitable for direct pharmacological validation, mechanistic studies, or positive-reference selection.
To study neuropharmacology, antiepileptic pathways, ion channels, or mechanisms relevant to mood disorders	Table 4	Lamotrigine in Table 4 is one of the most representative triazine drugs for this direction, with a clear research orientation.
To study hypoxic tumor microenvironments, radio-/chemosensitization, or bioreductive activation	Table 4	Tirapazamine in Table 4 is more directly relevant to hypoxia-selective antitumor research, without the need to screen indirectly from the agrochemical or materials tables.
To study nucleic-acid metabolism, inhibition of cell proliferation, or antimetabolite mechanisms	Table 4	6-Azauracil in Table 4 is a typical antimetabolite tool molecule and is more suitable for this kind of biochemical and cellular experiment.
To establish residue detection methods, standard curves, or multi-residue analytical methods for triazine herbicides	Table 5	Table 5 focuses on analytical standards of triazine/triazinone herbicides such as atrazine, ametryn, and simazine, making it the most direct entry point for environmental and pesticide-residue analysis.
To monitor triazine contaminants in water, soil, or groundwater	Table 5	Table 5 covers both parent herbicides and some metabolites, making it suitable for exposure assessment and trace quantification in environmental samples.
To track the metabolism, degradation, and transformation pathways of triazine herbicides such as atrazine	Table 5	In addition to parent standards, Table 5 also includes metabolites such as desethylatrazine and 2-hydroxyatrazine, making it more suitable for combined monitoring of parent compounds and transformation products.

Table 1 | Triazine Parent Cores, Amino Triazines, and Related Condensed Nitrogen-Rich Precursors

Category	CAS No.	Aladdin Catalog No.	Name	Specification or Purity	Product Features and Applications
Triazine parent core / triaminotriazine monomer	108-78-1	T431382	2,4,6-Triamino-1,3,5-triazine	Suitable for synthesis	The parent substance of melamine; a basic raw material for amino-resin studies, hydrogen-bonded assembly, and g-C3N4 precursor research, and also one of the most typical representatives for understanding amino chemistry on the s-triazine core.
Diaminotriazine recognition unit / functional monomer	504-08-5	D155489	2,4-Diamino-1,3,5-triazine	≥98%(T)	A classical diaminotriazine recognition motif; commonly used in multiple hydrogen-bond self-assembly, molecular recognition, functional polymers, and pseudo-base-pairing system design.
Guanamine-type triazine / amino-resin monomer	91-76-9	D139438	2,4-Diamino-6-phenyl-1,3,5-triazine	≥98%(HPLC)	That is, the benzoguanamine scaffold; commonly used in amino-resin and coating crosslinking systems, and especially representative when lower crosslink density and better flexibility are desired.
Guanamine-type triazine / amino-resin monomer	542-02-9	A106445	Acetoguanamine	≥98%	An acetoguanamine-type triazine monomer; often used as a precursor for modified amino resins/guanamine resins to tune curing behavior, flexibility, and formulation balance in coating systems.
Triazine parent core / basic heterocyclic building block	290-87-9	T162480	1,3,5-Triazine	≥98%(GC)	The s-triazine parent core itself; a common electron-deficient aromatic heterocyclic building block in medicinal chemistry, agrochemistry, and functional materials, suitable for studies of substitution patterns and reactivity.
Triazine isomer / basic heterocyclic building block	289-96-3	T169308	1,2,3-Triazine	≥95%	A less common triazine isomer; more suitable as a foundational molecule for studying reactivity, substitution effects, and new-scaffold construction in nitrogen-containing aromatic heterocycles.
Nitrogen-rich condensed intermediate / carbon nitride materials precursor	3576-88-3	I1065337	2,2'-Iminobis(4,6-diamino-1,3,5-triazine)	≥95%	A melam-type nitrogen-rich condensed intermediate; commonly encountered in studies of the pathway from melamine condensation to carbon nitride materials, and also useful as a building unit rich in hydrogen-bonding and nitrogen sites.
Heptazine / carbon nitride materials precursor	1502-47-2	B299932	1,3,4,6,7,9,9b-heptaazaphenalene-2,5,8-triamine	≥95%	That is, the melem (heptazine) scaffold; an important intermediate obtained by further condensation of melamine and commonly used in research on g-C3N4, photocatalysis, and nitrogen-rich semiconductor materials.

Table 2 | Triazines Used as Synthetic Activating Reagents, Coupling Reagents, Analytical Ligands, and Functional Materials

Category	CAS No.	Aladdin Catalog No.	Name	Specification or Purity	Product Features and Applications
Triazine activating reagent / scaffold for nucleophilic substitution	108-77-0	C118499	Cyanuric chloride	≥99%	One of the most important reactive triazines; can undergo stepwise nucleophilic substitution to build multiply substituted triazines, and is widely used in research on triazine agrochemicals, reactive dyes/fluorescent brighteners, and biomaterial crosslinking.
Coupling reagent / activated triazine	3140-73-6	C123027	2-Chloro-4,6-dimethoxy-1,3,5-triazine	≥97%	That is, CDMT; stable yet highly reactive, commonly used for carboxylic-acid activation and for building amide/ester bonds, and also an important precursor for preparing activating reagents such as DMTMM.
Coupling reagent / activation reagent friendly to aqueous systems	3945-69-5	D110326	4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride hydrate (DMTMM)	≥97%	A classical coupling reagent; commonly used for amidation and esterification of carboxylic acids with amines/alcohols, as well as bioconjugation, and is especially suitable for mild coupling in aqueous or water-containing systems.
Coordination/chromogenic reagent / antioxidant-assay ligand	3682-35-7	T106623	2,4,6-Tris(2-pyridyl)-s-triazine (TPTZ)	≥99%	A classical polypyridyl triazine ligand; used for Fe²⁺ color development and spectrophotometric analysis, and also the key reagent that forms the blue Fe²⁺–TPTZ complex in FRAP antioxidant-capacity assays.
Coordination/chromogenic reagent / metal-analysis ligand	1046-56-6	D155493	5,6-Diphenyl-3-(2-pyridyl)-1,2,4-triazine	≥98%	A PDT-type ligand; commonly used for spectrophotometric determination of trace iron/copper, and also widely employed in transition-metal complex construction, coordination chemistry, and biomolecular interaction studies.
Aryl-triazine scaffold for functional materials	493-77-6	T162547	2,4,6-Triphenyl-1,3,5-triazine (purified by sublimation)	≥99%	An electron-accepting aryl-triazine scaffold; commonly seen in OLED, optoelectronic, and COF-related functional-materials research, and the sublimation-purified grade is especially suitable for device and materials experiments requiring high purity.
Methoxymethylated melamine crosslinker	3089-11-0	T162539	2,4,6-Tris[bis(methoxymethyl)amino]-1,3,5-triazine	≥98%(HPLC)	That is, an HMMM/hexamethoxymethyl melamine-type crosslinker; commonly used for thermosetting crosslinking in baking coatings, inks, coil coatings, and metal-decorative systems.

Table 3 | Cyanuric Acid/Isocyanurate Systems, Disinfectants, Flame-Retardant Materials, and Industrial Functional Derivatives

Category	CAS No.	Aladdin Catalog No.	Name	Specification or Purity	Product Features and Applications
Cyanuric acid/isocyanurate and related derivatives	108-80-5	C431383	Cyanuric acid (CA)	Suitable for synthesis, ≥98%	The core parent compound of the isocyanuric acid/cyanuric acid system; commonly used as a precursor for chlorinated isocyanurates and related triazine materials, and also frequently encountered in studies of free-chlorine stabilization, migration/pollutant analysis, and melamine-related analytical methods.
Cyanuric acid/isocyanurate disinfectant	87-90-1	T434311	Trichloroisocyanuric acid (TCICA)	Suitable for synthesis	A high-available-chlorine donor; commonly used for disinfection, swimming-pool and circulating-water treatment, and can also serve as a mild chlorinating/oxidizing reagent in organic synthesis.
Cyanuric acid/isocyanurate disinfectant	51580-86-0	S303858	Sodium dichloroisocyanurate dihydrat	≥98%	A chlorinated isocyanurate salt with relatively good water solubility; commonly used in disinfectant tablets, surface/instrument sterilization, and water-treatment systems, and also suitable for studies on available-chlorine release and stability.
Cyanuric acid/isocyanurate disinfectant	2893-78-9	S109086	Sodium dichloroisocyanurate	≥96%	A classical chlorinated isocyanurate disinfectant; suitable for sterilization formulations, studies of available-chlorine release behavior, and water-treatment-process experiments.
Cyanuric acid–melamine adduct salt / flame retardant	37640-57-6	M303597	Melamine cyanurate	≥99%	A classical melamine–cyanuric acid adduct salt; a representative halogen-free flame-retardant material commonly used in flame-retardant formulations for engineering plastics such as PA6/PA66, as well as in studies of thermal decomposition and combustion behavior.
Isocyanurate polyester polyol / heat-resistant flame-retardant intermediate	839-90-7	T162476	Tris(2-hydroxyethyl) Isocyanurate (THEIC)	≥98%(N)	A trifunctional polyol containing an isocyanurate ring; commonly used in heat-resistant polyesters/coatings, insulating materials, and intumescent flame-retardant systems, combining heat resistance with crosslinking ability.
Melamine-related intermediate / impurity analyte	645-93-2	A134713	Ammelide	≥97%	A common related compound in melamine–cyanuric acid systems; often used in studies of reaction pathways, impurity profiles, and analytical method development for melamine-related compounds in food and environmental samples.
Melamine-related intermediate / impurity analyte	645-92-1	A151174	Ammeline	≥95%(N)	One of the by-products/degradation products related to melamine; commonly used for impurity control, migration monitoring, and LC/GC-MS method development in melamine-related systems.
Hexahydrotriazine industrial functional agent	4719-04-4	T193504	Hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine	≥75%	A common industrial functional agent based on hexahydrotriazine; widely used for H₂S scavenging in oilfields, corrosion control/biostatic treatment in metalworking fluids and coolants, and studies of alkanolamine-triazine systems.

Table 4 | Triazine Drugs and Bioactive Molecules

Category	CAS No.	Aladdin Catalog No.	Name	Specification or Purity	Product Features and Applications
Drug / phenyltriazine class	84057-84-1	L129555	Lamotrigine	Moligand™, ≥98%	A classical phenyltriazine antiepileptic drug; commonly used as a positive reference or mechanistic tool in studies related to neuropharmacology, ion channels, and mood disorders.
Drug / hypoxia-selective antitumor triazine	27314-97-2	A137151	Tirapazamine	Moligand™, ≥98%	A tirapazamine-type hypoxia-activated antitumor scaffold; commonly used in research on hypoxic tumor microenvironments, radio-/chemosensitization, and bioreductive activation.
Drug / antitumor triazine	645-05-6	T124791	2,4,6-Tris(dimethylamino)-1,3,5-triazine	Moligand™, ≥96%	That is, the altretamine/hexamethylmelamine scaffold; a classical antitumor triazine molecule commonly used in studies of ovarian-cancer-related pharmacology, metabolic activation, and DNA damage.
Antimetabolite triazinone / bioactive tool	461-89-2	A124269	6-Azauracil	≥99%	A 1,2,4-triazinone antimetabolite; commonly used in experiments related to nucleic-acid synthesis, nucleotide metabolism, and inhibition of cell proliferation.

Table 5 | Analytical Standards of Triazine Herbicides, Triazinones, and Metabolites

Category	CAS No.	Aladdin Catalog No.	Name	Specification or Purity	Product Features and Applications
Triazine herbicide analytical standard	1912-24-9	A114431	Atrazine solution	Analytical standard, 40-80μg/ml in Methanol	A classical chlorinated s-triazine herbicide standard; commonly used for residue monitoring in water, soil, and agricultural products, as well as for LC/GC quantitative-method calibration.
Triazine herbicide analytical standard	7287-19-6	P109356	Prometryn solution	Analytical standard, 10μg/ml in acetone	A methylthio triazine herbicide standard; suitable for environmental residue analysis, photolysis/degradation studies, and method validation.
Triazine herbicide analytical standard	122-34-9	S114868	Simazine solution	Analytical standard, 10μg/ml in acetone	A classical chlorinated triazine herbicide standard; commonly used for residue quantification in drinking water, surface water, and pesticide-residue samples.
Triazine herbicide analytical standard	886-50-0	T114771	Terbutryn	Analytical standard, ≥99%	A methylthio triazine herbicide analytical standard; commonly used in studies of environmental behavior, algal toxicity, and residue monitoring.
Triazine herbicide analytical standard	834-12-8	A114940	Ametryn	Analytical standard, ≥98.8%	A methylthio triazine herbicide standard; suitable for pesticide-residue analysis, environmental toxicology, and development of monitoring methods for water samples.
Triazinone herbicide analytical standard	51235-04-2	H109961	Hexazinone	Analytical standard, ≥98%	A broad-spectrum triazinone herbicide standard; commonly used in studies of residue, migration, and degradation of forestry/non-cropland herbicides.
Triazine herbicide analytical standard	1014-70-6	S114865	Simetryne	Analytical standard, ≥97%	A methylthio triazine herbicide standard; commonly used in studies of aquatic environmental exposure, ecotoxicity, and trace analytical methods.
Triazine metabolite / environmental analytical standard	6190-65-4	A770749	2-Amino-4-isopropylamino-6-chlorotriazin	Analytical standard	An important deethylated metabolite standard of atrazine; commonly used for combined parent–metabolite analysis and transformation-pathway studies in groundwater and environmental samples.
Triazinone herbicide analytical standard	21087-64-9	M114769	Metribuzin	Analytical standard	A triazinone herbicide standard; commonly used for residue quantification in crop and environmental samples and for development of multi-residue analytical methods.
Triazine herbicide analytical standard	139-40-2	P114764	Propazine	Analytical standard	A chlorinated triazine herbicide standard; suitable for residue analysis and environmental monitoring related to broad-spectrum weed control.
Triazine herbicide analytical standard	21725-46-2	C110004	Cyanazine	Analytical standard	A chlorinated triazine herbicide standard; commonly used in field-residue studies, environmental toxicology, and multi-component pesticide analysis.
Triazine herbicide analytical standard	5915-41-3	T114842	Terbuthylazine	Analytical standard	A chlorinated triazine herbicide standard; commonly used for residue analysis in soil/groundwater, metabolic transformation studies, and exposure assessment.
Triazine herbicide analytical standard	1610-17-9	A114433	Atraton	Analytical standard	A methoxy triazine herbicide standard; suitable for quantitative analysis of environmental samples and comparative studies within triazine herbicide series.
Triazine herbicide analytical standard	1610-18-0	P128273	Prometon Standard	1000ug/ml in Acetone	A broad-spectrum non-cropland herbicide standard solution; commonly used for detection and calibration of triazine residues in water and soil samples.
Triazine metabolite / environmental analytical standard	2163-68-0	H1430499	2-Hydroxy-atrazine	——	A typical hydroxylated transformation product of atrazine, atraton, and related compounds; commonly used in studies of environmental degradation pathways, metabolite screening, and combined monitoring of parent compounds and metabolites.

Note: The above are representative Aladdin products. For more product specifications, please refer to the product list at the end of the article or search the Aladdin website using the “Product Name/CAS/Catalog No.” fields.

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