for the following products
Fmoc-D-allo-Thr(tBu)-OH | Fmoc-D-Allo-Thr(tBu)-OH.H2O | Fmoc-D-Allo-Threonine(tBU)-OH | N-alpha-(9-Fluorenylmethyloxycarbonyl)-O-tert-butyl-allo-D-threonine and (2R,3R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(tert-butoxy)butanoic acid