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                                      Polyimide
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                                                      | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride | 
                                                     
                                                    
                                                      | CAS Number | 
                                                      4415-87-6 | 
                                                     
                                                    
                                                    
                                                      | Molecular Formula | 
                                                      C8H4O6 | 
                                                     
                                                    
                                                    
                                                      | Molecular Weight | 
                                                      196.11 | 
                                                     
                                                    
                                                    
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                                                            | DA-002 | 
                                                            PMDA (Pyromellitic dianhydride) | 
                                                           
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                                                      | Benzene-1,2,4,5-tetracarboxylic dianhydride | 
                                                     
                                                    
                                                      | CAS Number | 
                                                      89-32-7 | 
                                                     
                                                    
                                                    
                                                      | Molecular Formula | 
                                                      C10H2O6 | 
                                                     
                                                    
                                                    
                                                      | Molecular Weight | 
                                                      218.12 | 
                                                     
                                                    
                                                    
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                                                      | 3,3',4,4'-Biphenyl tetracarboxylic dianhydride | 
                                                     
                                                    
                                                      | CAS Number | 
                                                      2420-87-3 | 
                                                     
                                                    
                                                    
                                                      | Molecular Formula | 
                                                      C16H6O6 | 
                                                     
                                                    
                                                    
                                                      | Molecular Weight | 
                                                      294.22 | 
                                                     
                                                    
                                                    
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