2-[2-amino-5-[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-4-chlorophenyl]acetic acid,Ziprasidone Open-Ring Impurity, Sodium 2-[2-Amino-5-[2-[4-(1,2-benzisothiazol-3-yl)piperazin-1-yl]ethyl]-4-chlorophenyl]acetate ; Sodium 2-(2-amino-5-{2-[4-(benzo[d]isothiazol-3-yl)piperazin-1-yl]ethyl}-4-chlorophenyl)acetate