111608-98-1
3-(2-methyl-2-phenylhydrazino)-2-pentenedioic acid dimethyl ester
→
~81%
75996-84-8
methyl 2-(2-methoxy-2-oxoethyl)-1-methylindole-3-carboxylate
76013-18-8
dimethyl 3-(2-methyl-2-phenylhydrazono)pentanedioate