148451-96-1 3,5-Bis(tfm)Bz nactrp 3,5-Bis(trifluoromethyl)benzyl N-acetyltryptophan L 732138 L-732,138 L-Tryptophan, N-acetyl-, (3,5-bis(trifluoromethyl)phenyl)methyl ester N-Acetyl-L-trp-3,5-bistrifluoromethylbenzyl ester N-Acetyl-L-tryptophan-3,5-bistrifluoromethylbenzyl ester N-Acetyltryptophan 3,5-bis(trifluoromethyl)benzyl ester