Not Less Than - 95%
1H-Pyrazolo[3,4-c]pyridine-3-carboxylic acid, 4,5,6,7-tetrahydro-1-(4-methoxyphenyl)-6-(4-nitrophenyl)-7-oxo-,
ethyl ester; Ethyl 4,5,6,7-tetrahydro-1-(4-methoxyphenyl)-6-(4-nitrophenyl)-7-oxo-1H-pyrazolo[3,4-c]pyridine-3-carboxylate; Ethyl 1-(4-methoxyphenyl)-6-(4-nitrophenyl)-7-oxo-4,5-dihydropyrazolo[3,4-c]pyridine-3-carboxylate; Ethyl 1-(4-methoxyphenyl)-6-(4-nitrophenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate