1-Piperazinecarboxylic acid, 4-(7-fluoro-4H-thieno(3,4-b)(1,5)benzodiazepin-10-yl)-, ethyl ester 4-(7-Fluoro-4H-thieno(3,4-b)(1,5)benzodiazepin-10-yl)-1-piperazinecarboxylic acid ethyl ester 61325-96-0 BRN 1046761