1-Piperazinecarboxylic acid, 4-dibenz(b,f)oxepin-10-yl-, ethyl ester 22012-10-8 4-Dibenz(b,f)oxepin-10-yl-1-piperazinecarboxylic acid ethyl ester BRN 0579091 Ethyl 4-dibenz(b,f)oxepin-10-yl-1-piperazinecarboxylate RMI 61048