Chemical Name: Ethyl-(E/Z)-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate (as per USP)
Smiles: CCOC(C1=C(N/C=C(C#N)\C(OCC)=O)NN=C1)=O.CCOC(C2=C(N/C=C(C(OCC)=O)\C#N)NN=C2)=O
Inchi: InChI=1S/C4H4N4/c5-1-3-2-7-8-4(3)6/h2H,(H3,6,7,8)
Automated fluorimetric determination of the genotoxic impurity hydrazine in allopurinol pharmaceuticals using zone fluidics and on-line solid phase extraction
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Journal of Pharmaceutical and Biomedical Analysis 177 (2020) 112887
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Sajan PG*1, Rohith T1, Santosh Patil2, Mantelingu K3, Rangappa K S3, Kumara M N
Am. J. Pharm Health Res 2014;2(10)
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