for the following products
(2S,3R)-2-((tert-Butoxycarbonyl)amino)-3-hydroxybutanoic acid | Boc-L-Thr-OH | Boc-Thr-OH | N-(tert-Butoxycarbonyl)-L-threonine | N-alpha-tert-Butyloxycarbonyl-L-threonine | N-Boc-L-Threonine | N-tert-Boc-L-threonine and Boc-L-Threonine
