| 
                                 AK Scientific 
                                7237AL 
                             | 
                            100mg | 
                            $256 | 
                            Bis(NHS)PEG5  | 
                             | 
                        
                        
                            | 
                                 Alichem 
                                756526031 
                             | 
                            1g | 
                            $400.68 | 
                            Bis(2,5-dioxopyrrolidin-1-yl)4,7,10,13,16-pentaoxanonadecane-1,19-dioate  | 
                             | 
                        
                        
                            | 
                                 Alichem 
                                756526031 
                             | 
                            5g | 
                            $1117.2 | 
                            Bis(2,5-dioxopyrrolidin-1-yl)4,7,10,13,16-pentaoxanonadecane-1,19-dioate  | 
                             | 
                        
                        
                            | 
                                 American Custom Chemicals Corporation 
                                POL0002402 
                             | 
                            5MG | 
                            $495.52 | 
                            BIS-PEG6-NHS ESTER  | 
                             | 
                        
                        
                            | 
                                 Apolloscientific 
                                BIPG1267 
                             | 
                            100mg | 
                            $507 | 
                            Bis-PEG6-NHS ester  | 
                             | 
                        
                        
                            | 
                                 BroadPharm 
                                BP-20429 
                             | 
                            1g | 
                            $390 | 
                            Bis-PEG5-NHSester  | 
                             | 
                        
                        
                            | 
                                 Chemenu 
                                CM327948 
                             | 
                            100g | 
                            $3125 | 
                            (2,5-dioxopyrrolidin-1-yl)3-[2-[2-[2-[2-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethoxy]propanoate  | 
                             | 
                        
                        
                            | 
                                 Chem-Impex 
                                39706 
                             | 
                            500MG | 
                            $512.96 | 
                            Bis(NHS)PEG5,90%  | 
                             | 
                        
                        
                            | 
                                 Chem-Impex 
                                39706 
                             | 
                            25MG | 
                            $65.23 | 
                            Bis(NHS)PEG5,≥90%  | 
                             | 
                        
                        
                            | 
                                 Chem-Impex 
                                39706 
                             | 
                            100MG | 
                            $150.08 | 
                            Bis(NHS)PEG5,90%  | 
                             |