10H-Thieno(2,3-b)(1,4)benzodiazepine, 2-ethyl-5-(4-methyl-1-piperazinyl)- 2-Ethyl-5-(4-methyl-1-piperazinyl)-10H-thieno(2,3-b)(1,4)benzodiazepine 74162-55-3 BRN 5615882