1,2-Benzisothiazol-3(2H)-one, 2-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-, 1,1-dioxide, monohydrochloride 2-(4-(4-(2-Pyrimidinyl)-1-piperazinyl)butyl)-1,2-benzisothiazolin-3-one 1,1-dioxide, monohydrochloride 92589-98-5 BAY q 7821 Ipsapirone Ipsapirone hydrochloride Ipsapirone hydrochloride [USAN]