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Boc-(S)-3-amino-4-(3-trifluoromethyl-phenyl)-butyric acid270065-77-561 % similar Sitagliptin defuoro impurity 3851307-12-561 % similar Boc-(S)-3-amino-4-(4-fluoro-phenyl)-butyric acid218608-97-061 % similar Boc-(R)-3-amino-4-(4-fluoro-phenyl)-butyric acid218609-00-861 % similar Boc-(R)-3-amino-4-(4-iodo-phenyl)-butyric acid269396-71-661 % similar Boc-(R)-3-amino-4-(3-thienyl)-butyric acid269726-92-361 % similar Boc-(S)-3-amino-4-(4-bromo-phenyl)-butyric acid270062-85-661 % similar Boc-L-beta-Homoaspartic acid254101-10-559 % similar Boc-(R)-3-amino-4-(3,4-difluoro-phenyl)-butyric acid269396-59-058 % similar (S)-N-Boc-3-amino-3-phenylpropanoic acid103365-47-557 % similar (R)-N-Boc-3-amino-3-phenylpropanoic acid161024-80-257 % similar (S)-3-((tert-Butoxycarbonyl)amino)-4-(4-nitrophenyl)butanoic acid127106-71-256 % similar Boc-beta-Hoglu(Obzl)-OH218943-30-756 % similar Boc-(R)-3-amino-4-(4-nitro-phenyl)-butyric acid219297-12-856 % similar Boc-L-beta-homoleucine132549-43-055 % similar Boc-1,4-trans-acha-oh189153-10-453 % similar 2-(Boc-aminomethyl)phenylacetic acid40851-66-953 % similar Boc-D-tryptophanol158932-00-452 % similar Fmoc-beta-Glu(OtBu)-OH209252-17-552 % similar (βR)-β-Amino-1-naphthalenebutanoic acid269398-88-152 % similar