ethyl 2-cyano-2-[(2-nitrophenyl)hydrazinylidene]acetate

diethyl 2-(4-butoxyphenyl)propanedioate

ethyl 2-cyano-3-(4-methylsulfanylphenyl)prop-2-enoate

4-amino-2-methylchromeno[3,4-c]pyridin-5-one

1-氰基环丁基羧酸乙酯