2-[4-[4-[4-(Hydroxy diphenylmethyl)-1-piperidinyl]-1-oxobutyl]phenyl]-2,2-dimethylacetic acid methyl ester Suppliers, 2-[4-[4-[4-(Hydroxy diphenylmethyl)-1-piperidinyl]-1-oxobutyl]phenyl]-2,2-dimethylacetic acid methyl ester Manufacturers.