Allopurinol - Impurity A — Impurity Reference Standard

Buy Allopurinol - Impurity A (CAS 27511-79-1) impurity reference standard from Spectrasynth Pharmachem. Custom synthesis available — enquire for pricing, COA and availability.

• Product Code: SSPC-A01189
• CAS No.: 27511-79-1
• Chemical Name: 3-Amino-4-carbamoylpyrazole Hemisulfate
• Synonyms: 5-Amino-1H-pyrazole-4-carboxylic acid amide; 3-Amino-Pyrazole-4-carboxamide Hemisulfate; Allopurinol Related Compound A;
• Molecular Formula: C4H6N4O•1/2H2O4S
• Molecular Weight: 175.16
• Appearance: Off-White to Pale Yellow Solid
• Storage: 2-8°C Refrigerator
• Application: 3-(Formylamino)-1H-pyrazole-4-carboxamide (Allopurinol EP Impurity B) is an impurity of Allopurinol with inhibitory effects on human hypoxanthine phosphoribosyltransferase.