N-Alpha-Fmoc-L-glutamic acid gamma-succinimide ester alpha-tert-butyl ester Fmoc-L-Glu(OSu)-OtBu Fmoc-L-glutamic acid γ-N-hydroxysuccinimide ester α-tert-butyl ester≥ 97% (Assay) L-Glutamic acid, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-, 1-(1,1-dimethylethyl) 5-(2,5-dioxo-1-pyrrolidinyl) ester Fmoc-L-glutamic acid γ-N-hydroxysuccinimide ester α-tert-butyl ester 1-O-tert-butyl5-O-(2,5-dioxopyrrolidin-1-yl)2-(9H-fluoren-9-ylmethoxycarbonylamino)pentanedioate