CAS No 315-30-0

IUPAC 1,5-Dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one

Catalogue No. PACE-A11001

Molecular Formula C₅H₄N₄O

Molecular Weight 136.1 g/mol

Synonyms -

CAS No 22407-20-1

IUPAC 5-(Formylamino)-1H-pyrazole-4-carboxamide

Catalogue No. PACE-A11003

Molecular Formula C₅H₆N₄O₂

Molecular Weight 154.1 g/mol

Synonyms Allopurinol USP Related Compound B

CAS No 1346604-13-4

IUPAC 5-(4H-1,2,4-Triazol-4-yl)-1H-pyrazole-4-carboxamide

Catalogue No. PACE-A11004

Molecular Formula C₆H₆N₆O

Molecular Weight 178.2 g/mol

Synonyms Allopurinol USP Related Compound C

CAS No 6994-25-8

IUPAC Ethyl 5-amino-1H-pyrazole-4-carboxylate

Catalogue No. PACE-A11005

Molecular Formula C₆H₉N₃O₂

Molecular Weight 155.2 g/mol

Synonyms Allopurinol USP Related Compound D