140923-25-7 Carbamic acid, ((1S)-2-methyl-1-((((1R)-1-(4-methylphenyl)ethyl)amino)carbonyl)propyl)-, 1-methylethyl ester Carbamic acid, (2-methyl-1-(((1-(4-methylphenyl)ethyl)amino)carbonyl)propyl)-, 1-methylethyl ester, (S-(R*,S*))-