1703-07-7
6-氯-5-甲基哒嗪-3-酮
→
89283-31-8
3-氯-5-甲基哒嗪
19064-64-3
3,6-二氯-4-甲基哒嗪
342402-51-1
4-methyl-6-oxo-1H-pyridazine-5-carboxylic acid
54709-94-3
3-羟基-5-甲基哒嗪