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Olanzapine Impurity H Control 2,10-Dimethyl-4-(4-methyl-1-piperazinyl)-10H-thieno-[2,3-b][1,5]benzodiazepine 10H-Thieno[2,3-b][1,5]benzodiazepine, 2,10-dimethyl-4-(4-methyl-1-piperazinyl)- (E)-2,10-diMethyl-4-(4-Methylpiperazin-1-yl)-10H-benzo[b]thieno[2,3-e][1,4]diazepine Olanzapine?Impurity?15/2,10-Dimethyl-4-(4-methyl-1-piperazinyl)-10H-thieno-[2,3-b][1,5]benzodiazepine