13734-34-4 92761-90-5 Alanine, N-carboxy-3-phenyl-, N-tert-butyl ester, L- (8CI) Boc-phenylalanine EINECS 237-305-5 L-Phenylalanine, N-((1,1-dimethylethoxy)carbonyl)- N-((1,1-Dimethylethoxy)carbonyl)-N-L-phenylalanine N-(tert-Butoxycarbonyl)-L-phenylalanine N-(tert-Butoxycarbonyl)phenylalanine N-t-Butyloxycarbonyl-L-phenylalanine N-tert-Butyloxycarbonyl-L-phenylalanine NSC 111172