61826-32-2

Clemastine Impurity 1 SR isomer of clemastine fumarate Clemastine Impurity 3 Fumarate (S,R-isomer) Pyrrolidine, 2-[2-[(1R)-1-(4-chlorophenyl)-1-phenylethoxy]ethyl]-1-methyl-, (2S)-, (2E)-2-butenedioate (1:1) Pyrrolidine, 2-[2-[1-(4-chlorophenyl)-1-phenylethoxy]ethyl]-1-methyl-, [R-(R*,S*)]-, (E)-2-butenedioate (1:1)