for the following products
(S)-2-((tert-Butoxycarbonyl)amino)-3-(thiazol-4-yl)propanoic acid | (S)-N-Boc-4-Thiazoylalanine | Boc-3-(4-Thiazolyl)-L-alanine | Boc-beta-(4-thiazolyl)-Ala-OH | Boc-L-4-Thiazolylalanine and N-alpha-tert-Butoxycarbonyl-3-(4-thiazolyl)-L-alanine
