Not Less Than – 95%
(1RS)-4-[4-(Hydroxydiphenyl-methyl)piperidin-1-yl]-1-[4-(1-methylethyl)-phenyl]butan-1-ol; Decarboxy Fexofenadine; 4-(Hydroxydiphenylmethyl)-α-[4-(1-methylethyl)phenyl]-1-piperidinebutanol; 4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)-1-(4-isopropylphenyl)butan-1-ol; (±)-4-[1-Hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-butyl]-isopropylbenzene (USP)