diethyl 2-[(phenylhydrazinylidene)methyl]propanedioate

3,5-Diphenylylimino-1,2,4-dithiazolidin

S-[2-oxo-2-(2-phenylhydrazinyl)ethyl] carbamothioate

ethyl 2-(5-ethoxy-1-phenylpyrazol-3-yl)acetate

ethyl 1,5-diphenylpyrazole-4-carboxylate