10H-Pyrido(3,2-b)(1,4)benzothiazine-10-carbothioic acid, S-(2-(4-phenyl-1-piperazinyl)ethyl) ester 35805-98-2 BRN 1051573 S-(2-(4-Phenyl-1-piperazinyl)ethyl) 10H-pyrido(3,2-b)(1,4)benzothiazine-10-carbothioate