117014-32-1 BA-gamma-Fme L-Aspartic acid, N-((1,1-dimethylethoxy)carbonyl)-, 4-(9H-fluoren-9-ylmethyl) ester N-alpha-tert-Butyloxycarbonyl-aspartic acid gamma-fluorenylmethyl ester Nalpha-Boc-asp-gamma-fluorenylmethyl ester