| —— | 
                                        2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetic acid | 
                                        300851-12-1 | 
                                        C14H12O5 | 
                                        260.246 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]aminobutanoic acid | 
                                        374702-72-4 | 
                                        C18H19NO6 | 
                                        345.352 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]-β-alanine | 
                                        887858-84-6 | 
                                        C17H17NO6 | 
                                        331.325 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]glycine | 
                                        374701-99-2 | 
                                        C16H15NO6 | 
                                        317.298 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]aminohexanoic acid | 
                                        374701-20-9 | 
                                        C20H23NO6 | 
                                        373.406 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]alanine | 
                                        956236-91-2 | 
                                        C17H17NO6 | 
                                        331.325 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]isonipecotic acid | 
                                        877791-12-3 | 
                                        C20H21NO6 | 
                                        371.39 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]norvaline | 
                                        —— | 
                                        C19H21NO6 | 
                                        359.379 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]valine | 
                                        956962-49-5 | 
                                        C19H21NO6 | 
                                        359.379 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]glutamic acid | 
                                        956193-19-4 | 
                                        C19H19NO8 | 
                                        389.362 | 
                                    
                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                                                        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]citrulline | 
                                        —— | 
                                        C20H23N3O7 | 
                                        417.419 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]aspartic acid | 
                                        956041-23-9 | 
                                        C18H17NO8 | 
                                        375.335 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]arginine | 
                                        956049-59-5 | 
                                        C20H24N4O6 | 
                                        416.434 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[2-(4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yloxy)acetyl]phenylalanine | 
                                        874374-70-6 | 
                                        C23H21NO6 | 
                                        407.423 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        N-[([4-oxo-1,2,3,4-tetrahydrocyclopenta[c]chromen-7-yl]oxy)acetyl]cytisine | 
                                        —— | 
                                        C25H24N2O5 | 
                                        432.476 |