121497-08-3
dimethyl 4-(4-amino-3-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate
→
~75%
121497-15-2
4-(3,4-diaminophenyl)-2,6-dimethyl-3,5-bis(methoxycarbonyl)-1,4-dihydropyridine