4-chloro-5-hydrazinyl-2-methylpyridazin-3-one

4-氯-2-甲基-5-吗啉-4-基哒嗪-3-酮

2-oxo-2-phenylethyl 3-methoxybenzoate

4-[amino(methyl)amino]-5-chloro-2-methylpyridazin-3-one

2-methyl-5-nitro-1H-pyridazine-3,4-dione