5-chloro-4-methyl-3H-1,3-oxazine-2,6-dione

ethyl 2-chloro-2-[(2-prop-2-ynylsulfanylphenyl)hydrazinylidene]acetate

2,2-二氯乙酰乙酸乙酯

Acetic acid, chloro[[2-(2-propenyloxy)phenyl]hydrazono]-, ethyl ester

ethyl 2-(1-ethoxy-1,3-dioxobutan-2-yl)sulfanyl-3-oxobutanoate