(4-hydrazinylidenecyclohexylidene)hydrazine

2-(N,N'-dimethyl-hydrazino)-ethanol

(4-oxocyclohexyl) methanesulfonate

methyl 2-[4-(2-methoxy-2-oxoethylidene)cyclohexylidene]acetate

Methyl (4-oxocyclohexylidene)acetate