53-32-7 MA 1466 N-(1-Methyl-2-(4-hydroxy-4-phenyl-1-piperidyl)ethyl)propionanilide oxalate Propanamide, N-(2-(4-hydroxy-4-phenyl-1-piperidinyl)-1-methylethyl)-N-phenyl-, ethanedioate Propionanilide, N-(1-(4-hydroxy-4-phenylpiperidino)-2-propyl)-, oxalate Propionanilide, N-(2-(4-hydroxy-4-phenylpiperidino)-1-methylethyl)-, oxalate (1:1) (salt)