苄基三甲基溴化铵benzyltrimethylammonium Bromide5350 41 4参数，分子结构式，图谱信息 物竞化学
苄基三甲基溴化铵benzyltrimethylammonium Bromide5350 41 4参数，分子结构式，图谱信息 物竞化学
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