1H-1,2,3-Triazole
1H-1,2,3-Triazole (CAS: 288-36-8), with the molecular formula C2H3N3 and a molecular weight of 69.07 g/mol, is a heterocyclic organic compound. It is a key building block in organic synthesis, particularly for creating more complex nitrogen-containing heterocyclic structures. This compound finds utility in the development of pharmaceuticals, agrochemicals, and materials science due to its versatile reactivity.
- Synonyms
- 288-36-8C2H3N3

Pharmaceutical Intermediate
1H-1,2,3-Triazole serves as a crucial intermediate in the synthesis of various pharmaceutical agents. Its heterocyclic structure can be incorporated into drug molecules to modulate biological activity.
Agrochemical Development
The triazole moiety is present in numerous agrochemicals, including fungicides and herbicides. 1H-1,2,3-Triazole is used as a starting material or building block in the research and development of new crop protection agents.
Materials Science
In materials science, 1H-1,2,3-Triazole and its derivatives can be employed in the synthesis of polymers and functional materials, leveraging their unique electronic and structural properties.
Organic Synthesis Reagent
As a versatile heterocyclic building block, 1H-1,2,3-Triazole is utilised in general organic synthesis for constructing complex molecular architectures.
| Molecular weight | 69.07 |
|---|---|
| Empirical formula | C2H3N3 |
| Assay | 97% |
| Boiling point | 203 °C/752 mmHg(lit.) |
| Density | 1.192 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.498(lit.) |
| Melting point | 23-25 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 107 °C / 224.6 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1H-1,2,3-Triazole used for?
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1H-1,2,3-Triazole is primarily used as a building block in organic synthesis, particularly for creating pharmaceutical intermediates, agrochemicals, and advanced materials. Its versatile reactivity makes it valuable in chemical research and development.
What is the CAS number and formula for 1H-1,2,3-Triazole?
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The CAS number for 1H-1,2,3-Triazole is 288-36-8, and its empirical formula is C2H3N3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1H-1,2,3-Triazole with an assay of 97%. We do not represent this product as meeting USP, BP, EP, or any pharmacopoeia standards.
How should 1H-1,2,3-Triazole be handled safely?
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1H-1,2,3-Triazole is classified as a Warning. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields and gloves, and ensure adequate ventilation. Avoid breathing vapours or dust.
How is 1H-1,2,3-Triazole packed and shipped?
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1H-1,2,3-Triazole is carefully packed for domestic and international shipment in compliance with all relevant regulations. TSS is a global supplier and exporter of fine chemicals.
How can I request a sample or quote for 1H-1,2,3-Triazole?
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To request a sample or obtain a quotation for 1H-1,2,3-Triazole, please contact our sales department through the website or by phone. Please specify your required quantity and delivery location.
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