Analytical Reference substance

Allopurinol EP Impurity B / Allopurinol USP Related Compound B

5-Formylamino-1H-pyrazole-4-carboxamide


Product Number: OLY-ALL-B
CAS Number: 22407-20-1
Lot Number: OLYALL0010.0B
Molecular Formula: C5H6N4O2
Molecular Weight: 154.13

Long Term Storage: 02-08 °C
Appearance:
Melting Point:
Purity By HPLC: NLT 95%

Sr No. Test Results Date ref.
1 1H NMR Confirm Report Attached
2 Mass Confirm Report Attached
3 HPLC NLT 95% Report Attached
Expiry Date: 06-11-2026
This certificate is valid for two years from the date of Manufacturing Provided the substance is stored under the recommended conditions.

Document data reference:
Prepared by

Dr. Ashish Keche
Head of QA & QC
Reviewed by

Dr. Girish Hatnapure
Head of R& D
Approved by

Dr. Atish Rodge
Managing Director

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