CAS: 41680-34-6 Molecular Formula: C4H5N3O2 Molecular Weight (g/mol): 127.103 MDL Number: MFCD00005239 InChI Key: KMRVTZLKQPFHFS-UHFFFAOYSA-N Synonym: 3-amino-1h-pyrazole-4-carboxylic acid,3-aminopyrazole-4-carboxylic acid,3-amino-4-pyrazolecarboxylic acid,3-amino-4-carboxypyrazole,1h-pyrazole-4-carboxylic acid, 3-amino,4-pyrazolecarboxylic acid, 3-amino,pyrazole-4-carboxylic acid, 3-amino,3-aminopyrazole-4-carboxylicacid,3-amino-4-pyrazole carboxylic acid,5-aminopyrazole-4-carboxylic acid PubChem CID: 96774 IUPAC Name: 5-amino-1H-pyrazole-4-carboxylic acid SMILES: C1=NNC(=C1C(=O)O)N