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3-[(tert-Butoxycarbonyl)amino]-3-(4-fluorophenyl)propanoic acid284493-72-7100 % similar (S)-N-Boc-3-amino-3-phenylpropanoic acid103365-47-576 % similar (R)-N-Boc-3-amino-3-phenylpropanoic acid161024-80-276 % similar (S)-3-((tert-Butoxycarbonyl)amino)-3-(4-chlorophenyl)propanoic acid479064-90-975 % similar 3-[(tert-Butoxycarbonyl)amino]-3-(4-methoxyphenyl)propanoic acid96363-20-173 % similar Boc-(S)-3-amino-4-(4-fluoro-phenyl)-butyric acid218608-97-069 % similar Boc-(R)-3-amino-4-(4-fluoro-phenyl)-butyric acid218609-00-869 % similar 3-(Boc-amino)-3-(3-methoxyphenyl)propionic acid284493-53-462 % similar Sitagliptin defuoro impurity 3851307-12-560 % similar (3S)-3-(((tert-Butoxy)carbonyl)amino)-3-(4-fluorophenyl)propanoic acid479064-88-560 % similar (betaR)-beta-(((1,1-Dimethylethoxy)carbonyl)amino)-4-fluorobenzenepropanoic acid479064-94-360 % similar Boc-L-4-fluorophe41153-30-456 % similar (S)-3-(Boc-amino)-4-phenylbutyric acid51871-62-655 % similar (3S)-3-(((tert-Butoxy)carbonyl)amino)butanoic acid158851-30-054 % similar Boc-(R)-3-amino-4-(3,4-difluoro-phenyl)-butyric acid269396-59-053 % similar Boc-D-aspartic acid62396-48-953 % similar Boc-L-phenylglycinol117049-14-653 % similar Boc-L-beta-homovaline183990-64-952 % similar Boc-asp-otbu34582-32-652 % similar (R)-4-(tert-Butoxy)-3-((tert-butoxycarbonyl)amino)-4-oxobutanoic acid77004-75-252 % similar