3-Amino-4-carboxamidopyrazole hemisulfate

3-Amino-4-carboxamidopyrazole hemisulfate is used mainly as a crucial pharmaceutical intermediate, especially in the synthesis of the gout medication Allopurinol (an impurity of which it also serves as a standard) and other pyrazole-based drugs like cyclin-dependent kinase inhibitors, acting as a building block for complex heterocyclic compounds in drug discovery.

API Name Allopurinol
CAS No 27511-79-1
Molecular Formula C8H14N8O6S
Molecular Weight 350.32 g/mol
Synonyms bis(5-amino-1H-pyrazole-4-carboxamide);sulfuric acid

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