Chemical Name: 5-Amino-1H-pyrazole-4-carboxamide (as per EP) ; 3-Amino-4-carboxamidopyrazole (as per USP)
Synonym: Allopurinol USP Related Compound A
Smiles: O=C(C1=C(N)NN=C1)N.OS(O)(=O)=O
Inchi: InChI=1S/C5H4N4O/c10-5-3-1-8-9-4(3)6-2-7-5/h1-2H,(H2,6,7,8,9,10)
Automated fluorimetric determination of the genotoxic impurity hydrazine in allopurinol pharmaceuticals using zone fluidics and on-line solid phase extraction
Paraskevas D. Tzanavaras a,∗, Stefanos Themistokleous a, Constantinos K. Zacharis
Journal of Pharmaceutical and Biomedical Analysis 177 (2020) 112887
A Validated Stability Indicating RP-UPLC Method for the Quantitative Determination of Potential Impurities of Allopurinol
Sajan PG*1, Rohith T1, Santosh Patil2, Mantelingu K3, Rangappa K S3, Kumara M N
Am. J. Pharm Health Res 2014;2(10)
Development Of A Stability Indicating RP-RRLC Method For Determination Of Allopurinol And Its Degradation Products In Solid Oral Dosage
Sukhdev Singh1*, Zakir Gadhawala
Int.J.PharmTech Res.2013,5(1), pp 44-53