C3H3N3O2
113.08 g/mol
Research ReagentWarning
1H-1,2,4-Triazole-3-carboxylic acid
CAS4928-87-4EC610-450-5
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
1H-1,2,4-Triazole-3-carboxylic acid is a chemical compound featuring an aromatic triazole ring with a carboxylic acid substituent. It is primarily used as a pharmaceutical intermediate in research and chemical development.
pharmaceutical intermediateresearch reagent
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Referencesame scaffold
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pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 1H-1,2,4-Triazole-3-carboxylic acid (CAS 4928-87-4) is 2933.99.
HS code (international, 6-digit)
2933.99
EU CN code (8-digit)
2933 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1H-1,2,4-triazole-5-carboxylic acid
InChIKey
LJVQHXICFCZRJN-UHFFFAOYSA-N
SMILES
C1=NNC(=N1)C(=O)O
Synonyms (12)
- RIBAVIRIN IMPURITY C (EP IMPURITY)
- Ribavirin EP Impurity C
- Ribavirin Imp. C (EP); 1H-1,2,4-Triazole-3-carboxylic Acid; Ribavirin Impurity C
- 4h-1,2,4-triazolic acid
- Ribavirin Impurity 6
- Ribavirin impurity C
- S-Triazole-3-carboxylic acid
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