4,5-二氢-6-甲基哒嗪-3(2H)-酮

N'-acryloyl-N-(but-3-en-2-yl)-4-methylbenzenesulfonohydrazide

2-t-butyl-2,3-dihydro-6-methyl-3-oxopyridazine-4-carboxylic acid

3-氯-6-甲基哒嗪