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4-(Methylamino)butyric acid hydrochloride6976-17-6 4-(trans-4-Butylcyclohexyl)benzoic acid83626-35-1 4-[4-(2-Hydroxy-ethyl)-piperazin-1-yl]-4-oxo-butyric acid717904-43-3 4-Amino-2-fluoro-5-methoxybenzoic acid1001346-91-3 4-Amino-2-hydroxybutanoic acid13477-53-7 4-Amino-2-sulfobenzoic acid527-76-4 4-Amino-3-bromobenzoic acid6311-37-1 4-Amino-3-hydroxybenzoic acid2374-03-0 4-Amino-3-mercaptobenzoic acid14543-45-4 4-Amino-3-phenyl-L-alanine monohydrochloride62040-55-5 4-Amino-N-[(1,1-dimethylethoxy)carbonyl]-D-phenylalanine164332-89-2 4-Bromo-2,6-difluorobenzoic acid183065-68-1 4-Bromo-3,5-dihydroxybenzoic acid16534-12-6 4-Bromocrotonic acid13991-36-1 4-Chloro-2-iodobenzoic acid13421-13-1 4-Chloro-2-methoxybenzoic acid57479-70-6 4-Chloro-3-(trifluoromethyl)benzoic acid1737-36-6 4-Chloro-3-iodobenzoic acid42860-04-8 4-Chloro-3-methoxybenzoic acid85740-98-3 4-Chloro-3-nitrophenylacetic acid37777-68-7