1-(2-Bromo-10,11-dihydrodibenzo(b,f)thiepin-10-yl)-4-methylpiperazine dimethanesulfonate 58722-64-8 Piperazine, 1-(2-bromo-10,11-dihydrodibenzo(b,f)thiepin-10-yl)-4-methyl-, dimethanesulfonate