for the following products
Fmoc-(N-gamma-Boc)-D-alpha,gamma-diaminobutyric acid | Fmoc-D-Dab(Boc)-OH | Fmoc-D-Dab(Fmoc)-OH | N-alpha-Fmoc-N-gamma-Boc-D-2,4-diaminobutyric acid and N-alpha-(9-Fluorenylmethyloxycarbonyl)-n-gamma-tert-butyloxycarbonyl-D-2,4-diaminobutyric acid