94248-99-4
6-甲基吡嗪-3(2H)-酮氢溴酸
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65202-58-6
3-溴-6-甲基哒嗪
157200-06-1
1,1,1-trifluoro-Methanesulfonic acid 6-methyl-3-pyridazinyl ester
13327-27-0
6-甲基-3(2H)-哒嗪酮