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1,2,4-Triazole

1,2,4-Triazole Structure
1,2,4-Triazole structure
CAS No.
288-88-0
Chemical Name:
1,2,4-Triazole
Synonyms
TRIAZOLE;1H-1,2,4-TRIAZOLE;4H-1,2,4-triazole;1,2,4-1H-TRIAZOLE;1,2,4-Triazol;PYRRODIAZOLE;1H-1,2,4-Triazol;1,2,4-Triazole,99%;TA-4;TAR4
CBNumber:
CB2277901
Molecular Formula:
C2H3N3
Molecular Weight:
69.07
MDL Number:
MFCD00005228
MOL File:
288-88-0.mol
MSDS File:
SDS
Last updated:2025-08-05 11:26:09
Product description Number Pack Size Price
1,2,4-Triazole 98% T46108 25g $38
1,2,4-Triazole 98% T46108 100g $101
1,2,4-Triazole for synthesis 8.08388 25g $53.6
1,2,4-Triazole for synthesis 8.08388 100g $172
1,2,4-Triazole certified reference material, TraceCERT?, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland PHR9178 100mg $431
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1,2,4-Triazole Properties

Melting point 119-121 °C (lit.)
Boiling point 260 °C (lit.)
Density 1.15 g/cm3 (130℃)
bulk density 550kg/m3
vapor pressure 0.215Pa at 20℃
refractive index 1.4854 (estimate)
Flash point 140 °C
storage temp. Store below +30°C.
solubility 547g/l
form Crystalline Powder and Flakes
pka 2.27(at 20℃)
color White
PH 8 (10g/l, H2O, 20℃)
Water Solubility 1250 g/L (20 ºC)
Merck 14,9605
BRN 104767
InChIKey NSPMIYGKQJPBQR-UHFFFAOYSA-N
LogP -0.76 at 25℃
CAS DataBase Reference 288-88-0(CAS DataBase Reference)
EWG's Food Scores 3
FDA UNII 10MS0Y1RDI
NIST Chemistry Reference 1H-1,2,4-Triazole(288-88-0)
Pesticides Freedom of Information Act (FOIA) 1H-1,2,4-Triazole,1H-1,2,4-Triazole
EPA Substance Registry System 1,2,4-Triazole (288-88-0)
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS07,GHS08
Signal word  Warning
Hazard statements  H302-H319-H361d
Precautionary statements  P201-P202-P264-P301+P312-P305+P351+P338-P308+P313
Hazard Codes  Xn,Xi,C
Risk Statements  22-36-63-34
Safety Statements  36/37-45-36/37/39-27-26
WGK Germany  2
RTECS  XZ3806000
Hazard Note  Irritant
TSCA  Yes
HS Code  29339990
Hazardous Substances Data 288-88-0(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 1650 mg/kg LD50 dermal Rabbit 3129 - 4200 mg/kg
NFPA 704
1
2 0

1,2,4-Triazole price More Price(53)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich T46108 1,2,4-Triazole 98% 288-88-0 25g $38 2025-07-31 Buy
Sigma-Aldrich T46108 1,2,4-Triazole 98% 288-88-0 100g $101 2025-07-31 Buy
Sigma-Aldrich 8.08388 1,2,4-Triazole for synthesis 288-88-0 25g $53.6 2025-07-31 Buy
Sigma-Aldrich 8.08388 1,2,4-Triazole for synthesis 288-88-0 100g $172 2025-07-31 Buy
Sigma-Aldrich PHR9178 1,2,4-Triazole certified reference material, TraceCERT?, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland 288-88-0 100mg $431 2025-07-31 Buy
Product number Packaging Price Buy
T46108 25g $38 Buy
T46108 100g $101 Buy
8.08388 25g $53.6 Buy
8.08388 100g $172 Buy
PHR9178 100mg $431 Buy

1,2,4-Triazole Chemical Properties,Uses,Production

Chemical Properties

white crystalline powder and flakes

Uses

1,2,4-triazole and its derivatives are important structural moieties of many pharmaceutical drugs. Triazoles can also act as ligands to form coordination complexes with transition metal ions. Due to their electron-deficient nature, they exhibit excellent electron-transport and hole-blocking properties, making them promising organic materials in material science applications.

Uses

1,2,4-Triazole is used in the production of pesticides, pharmaceuticals (fluconazole), dyes and rubber additives, and also in the photoconductor of replication system. Intermediate of antifungal fluconazole.

Uses

1,2,4-Triazole is present in a large variety of fungicides as C14-demethylase-inhibitors. In addition they are used in synthetic chemical reactions such as the design and preparation of ghrelin receptor ligand antagonists, like JMV 2959.

Definition

1,2,4-triazole is a chemical substance with molecular formula C2H3N3, molecular weight 69.07 and CAS No. 288-88-0. Colorless acicular crystal, soluble in water and ethanol. 1H-1,2,4-triazole is a 1,2,4-triazole. It is a tautomer of a 3H-1,2,4-triazole and a 4H-1,2,4-triazole.
Triazole is an aromatic five membered heterocyclic compound. Its unique structure is conducive to the formation of a variety of non covalent bonds and is easy to promote the binding of proteins, enzymes and receptors, thus showing a wide range of biological pharmacological activities, such as anticancer, antispasmodic, antibacterial, anti HIV. In particular, 1,2,3-triazole has strong thermal stability and acid-base stability, and is not sensitive to redox, hydrolysis and enzymatic degradation. It is often used as a pharmacodynamic group in drug synthesis.

Definition

A heterocyclic organic compound with a five-membered ring containing two carbon atoms and three nitrogen atoms. There are two isomers.

Flammability and Explosibility

Non flammable

Synthesis

Alkyl bromide and sodium azide were used as raw materials to prepare organic azides, and a series of 1,2,4-Triazole small molecules were prepared by click chemistry. The structures of the six products were characterized by 1H NMR, 13C NMR and IR. the products were expected targets. Furthermore, the effect of different substituent structure on the reaction was discussed. Especially the introduction of drug molecule ethisterone, which is expected to provide a certain experimental basis for the application of triazole and its derivatives in biomedicine and other fields.
synthesis route of 1,2,4-Triazole.pngAs shown in the figure, alkyl bromide and sodium azide were used as raw materials, N, N-dimethylformamide was used as solvent, and reacted at room temperature for 20 hours under the protection of nitrogen. After the reaction, the solvent was extracted, dried, filtered and spin evaporated to obtain alkyl azide compound 1.Put a certain proportion of alkyl azide 1 and alkynyl compound 2 into a round bottom flask, copper powder and copper acetate as catalysts, acetonitrile as solvent, and react at room temperature for 4 hours under the protection of nitrogen. After that, extract, dry, filter and spin the solvent, and purify by thin chromatography to obtain triazole compound 3.

Purification Methods

Crystallise 1,2,4-triazole from EtOH, H2O, EtOAc (m 120.5-121o), or EtOH/*C6H6. The hydrochloride has m 170o, and the picrate has m 163-164o (from H2O or CHCl3). [Barszcz et al. J Chem Soc, Dalton Trans 2025 1986]. [Beilstein 26 H 13, 26 II 6, 26 III/IV 35.]

1,2,4-Triazole synthesis

107-31-3
288-88-0
Synthesis of 1,2,4-Triazole from Methyl formate

1,2,4-Triazole Preparation Products And Raw materials

Raw materials

1,2-Diformylhydrazine Hydrazinium hydroxide solution 4-Chlorobenzaldehyde Ammonium formate Formic acid
Hydrazine hydrate Methyl formate Ammonia Flutriafol 1H-1,2,4-Triazole, 1-chloro-

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Preparation Products

Propiconazole BASIC RED 46 1-[2-(4-CHLOROPHENYL)-1-(1-HYDROXY-1-PHENYLETHYL)ETHYL]-1,2,4-TRIAZOLE 1H-1,2,4-Triazole-1-carboximidamide hydrochloride 3,5-DIBROMO-1H-1,2,4-TRIAZOLE
Anastrozole 1-(4-NITROBENZENESULFONYL)-1H-1,2,4-TRIAZOLE Fluconazole Triapenthenol 3-[(2,4-dihydro-2,4-dimethyl-3H-1,2,4-triazol-3-ylidene)hydrazono]-1-methyl-2-phenyl-3H-indolium chloride
Paclobutrazol Basic Red 22 Bitertanol 1-(BETA-D-2-DEOXYRIBOFURANOSYL)-4-(1,2,4-TRIAZOL-1-YL)-5-METHYLPYRIMIDIN-2-ONE 3-chloro-6-(1H-1,2,4-triazol-1-yl)pyridazine(SALTDATA: FREE)
Benzaldehyde, 5-chloro-2-(1H-1,2,4-triazol-1-yl)- 1-(2-FLUORO-4-NITROPHENYL)-1H-1,2,4-TRIAZOLE 4-(1H-1,2,4-TRIAZOL-1-YLMETHYL)BENZALDEHYDE

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1,2,4-Triazole Suppliers

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Shandong shuolan chemical co.ltd 		58
Jiangxi Huihe Chemical Co., Ltd.
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Jiaxing Dongliang Pharmaceutical Technology Co.,Ltd.
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Wuwei hailun New Material Technology Co., Ltd.
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BTC pharm India
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Jiangsu Guotai Guomian Trading Co. Ltd.
58
Junwee Chemical co., Ltd.
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Shanghai Acmec Biochemical Technology Co., Ltd.
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Hebei Chuanghai Biotechnology Co., Ltd 		58
Sichuan Zhuoyu Yantang Technology Co., Ltd. 		58

Related articles

  • The role of 1,2,4-triazole
  • Triazole is an aromatic five membered heterocyclic compound. Its unique structure is conducive to the formation of a variety o....
  • Jan 27，2022

Related Qustion

Ask a question
Q:What are the uses of 1,2,4-triazole?Anonymous - Aug 5，2025
A:1,2,4-Triazole is a basic structural unit in organic synthesis and can be used as a pharmaceutical intermediate for the preparation of various clinical drugs, including antibacterial drugs, antiviral drugs, antimicrobial drugs, anticancer drugs, and antibiotics.  In the field of organic synthesis, it can also be used as an intermediate for agricultural chemicals and polymer synthesis.  In addition, it is also used in ionic liquids, corrosion inhibitors, supramolecular chemistry, and materials science.
Q:What is the alkylation of 1,2,4-triazole?Anonymous - Aug 5，2025
A:The alkylation of 1,2,4-triazole with 4-nitrobenzyl halides and a variety of bases afforded the 1- and 4-alkylated isomers with a consistent regioselectivity of 90:10. Using DBU as a base in the alkylation of 1,2,4-triazoles allows for the convenient and high-yielding synthesis of 1-substituted 1,2,4-triazoles.
Q:What drugs contain a 1,2,4-triazole skeleton?Anonymous - Aug 5，2025
A:Triazole is an important heterocyclic compound with three nitrogen atoms in its five-membered ring. Its molecular formula is C2H3N3, and it is an isostere of amides, esters, and carboxylic acids. Depending on the position of the nitrogen atoms in the five-membered ring, triazole has two possible isomers, namely 1,2,3-triazole and 1,2,4-triazole.1,2,4-Triazole (CAS: 288-88-0) is one of the most important scaffold compounds and a fundamental building block of many drugs. As the primary pharmacophore, it binds to biological receptors through hydrogen bonding and dipole-dipole interactions, exhibiting a wide range of potential pharmacological activities, including antibacterial, antifungal, anti-inflammatory, antioxidant, analgesic, anticancer, antihypertensive, antibiotic, anti-HIV, anti-manial, antioxidant, and anticonvulsant activities. 1,2,4-Triazole can be used as the main ingredient in the preparation of various clinical therapeutic drugs, such as terconazole, itraconazole, fluconazole, bittertanol, cyproconazole (fungicides), trazodone (anti-depressant) and triazolam (sedative and hypnotic), etc.

View Lastest Price from 1,2,4-Triazole manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1,2,4-Triazole pictures 2025-11-15 1,2,4-Triazole
288-88-0
 0.99 RongNa Biotechnology Co.,Ltd
1,2,4-Triazole pictures 2025-11-14 1,2,4-Triazole
288-88-0
 US $1.00 / kg 1kg 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd
1,2,4-Triazole pictures 2025-11-14 1,2,4-Triazole
288-88-0
 US $0.00 / KG 1KG 98%min 30tons/month WUHAN FORTUNA CHEMICAL CO., LTD
  • 1,2,4-Triazole pictures
  • 1,2,4-Triazole
    288-88-0
  • US $1.00 / kg
  • 99%
  • Hebei Chuanghai Biotechnology Co., Ltd
  • 1,2,4-Triazole pictures
  • 1,2,4-Triazole
    288-88-0
  • US $0.00 / KG
  • 98%min
  • WUHAN FORTUNA CHEMICAL CO., LTD

1,2,4-Triazole Spectrum

1,2,4-Triazole(288-88-0)MS1,2,4-Triazole(288-88-0)1HNMR1,2,4-Triazole(288-88-0)13CNMR1,2,4-Triazole(288-88-0)IR11,2,4-Triazole(288-88-0)IR21,2,4-Triazole(288-88-0)Raman

288-88-0(1,2,4-Triazole)Related Search:

1-CHLOROMETHYL-1H-1,2,4-TRIAZOLE Tolyltriazole 5-Methyl-1H-benzotriazole 1H-1,2,4-Triazole-3-thiol 1-Hydroxybenzotriazole hydrate
3-Amino-1,2,4-Triazole 1H-Benzotriazole 4-Amino-4H-1,2,4-triazole 6-(1-Bromoethyl)-4-chloro-5-fluoropyrimidine Voriconazole Impurity 53
Voriconazole (2R,3S/2S,3R)-3-(4-Chloro-5-fluoro-6-pyrimidinyl)-2-(2,4-difluorophenyl)butan-2-ol hydrochloride 2-Chloro-2',4'-difluoroacetophenone Pyrimidine, 4-bromo-6-(1-bromoethyl)-5-fluoro- Pyrimidine, 4,4'-(1,2-dimethyl-1,2-ethanediyl)bis[2,6-dichloro-5-fluoro- (9CI)
(2R,3S/2S,3R)-2-(2,4-Difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol 1-Butanesulfonic acid, 4-hydroxy-, methyl ester Voriconazole Impurity 16

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TA-4 TRIAZOLE(1,2,4-) 1-HYDRO-1,2,4-TRIAZOLE CGA-71019 s-Triazole 1,2,4-TRIAZOLE, 1GM, NEAT 1,2,4-TriazoleForSynthesis 1,2,4-1H-Triazole, 99.50% 1,2,4-1H-Triazole, flakes, 99+% AKOS BBS-00004410 pyrrodiazol 1H-1,2,4-TRIAZLOENA-1,2,4-TRIAZLOE K-1,2,4-TRIAZLO sym-triazole 1,2,4-TRIAZOLE pure Voriconazole Impurity 7 1H-1,2,4-Triazole≥ 99% (HPLC) 1,2,4-1H-Triazole s-Triazole Pyrrodiazole 1H-1,2,4-Triazole 1,2,4-1H-TRIAZOLE, 99+%, FLAKES 1,2,4-1H-TRIAZOLE, 99.5% 1,2,4-1H-Triazole, flakes 1.2.4-Triazole 1g [288-88-0] Triazole-[13C2,15N2] 1,2,4-Triazole 4-1H-Triazole 1,2,4-1H-Triazole, 99.5% 25GR 1,2,4-1H-Triazole, 99.5% 5GR 3,4-Diazapyrrole s-Triazole (8CI) 1,2,4- threetriazole 1,2,4-1H-Triazole, 99.5%, 99.5% 1, 4-trichlorobenzene three azole nitrogen Anti-TAAR6 antibody produced in rabbit TAAR6 TAR4 TaR-4 TAR6 TaR-6 1,2,4-Triazole Vetec(TM) reagent grade, 98% 1H-1,2,4-Triazole (1,2,4-1H-Triazole 1,2,4-1H-TriazoL Fluconazole Impurity 16 1,2,4-Triazole > 1,2,4-Triazole, 99%, reagent grade 1,2,4-Triazole @100 μg/mL in MeOH 1,2,4-TRIAZOLE FOR SYNTHESIS 25 G 1, 4-trichlorobenzene triazole 1,2,4-Triazole USP/EP/BP 1,2,4 Triazole LR PYRRODIAZOLE TRIAZOLE 1H-1,2,4-TRIAZOLE 1,2,4-1H-TRIAZOLE 4H-1,2,4-triazole 1,2,4-Triazole,99% 1,2,4-Triazol 1H-1,2,4-Triazol 1,2,4-Triazole 95% 99% 1H-1,2,4-Triazole (Efinaconazole Impurity)