Not Less Than - 95%
2-Propanol, 1-[4-(2-methoxyethyl)phenoxy]-3-[(1-methylethyl)amino]-, (2E)-2-butenedioate (2:1) (salt); (±)-1-(Isopropylamino)-3-[p-(2-methoxyethyl)phenoxy]-2-propanol fumarate (2:1) (salt); 2-Propanol, 1-[4-(2-methoxyethyl)phenoxy]-3-[(1-methylethyl)amino]-, (±)-, (E)-2-butanedioate (2:1) (salt) (USP);