AD012550
                    (2S)-3-(4-aminophenyl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
                    
                        95753-56-3
                        
                        
                    
                    
                
                    
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                AD012556
                    (S)-4-((((9H-fluorene-9-yl)methoxy)oxo)amino)-5-methoxy-5-oxopentanoic acid
                    
                        145038-49-9
                        
                        
                    
                    
                
                    
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                AD012557
                    (4R)-4-(9H-fluoren-9-ylmethoxycarbonylamino)-5-methoxy-5-oxopentanoic acid
                    
                        175452-89-8
                        
                        
                    
                    
                
                    
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                AD012564
                    (R)-3-((((9H-fluorene-9-yl)methoxy)oxo)amino)-4-(allyloxy)-4-oxobutanoic acid
                    
                        204246-17-3
                        
                        
                    
                    
                
                    
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