Uses: Phototoxic phytoalexin; when activated by ultraviolet light, psoralen induces cross-linking in ...    More ...

    

Uses: Phototoxic phytoalexin; when activated by ultraviolet light, psoralen induces cross-linking in DNA.                                                            Items
                                                      

Standard

                             
                                                  Appearance
                                                      Yellow-Brown  Fine powder                       
                             
                                                  Odor                      
                                                      Characteristic   
                             
                                                  Tasted                      
                                                      Characteristic   
                             
                                                  Particle   size                          
                                                      100% pass 100   mesh
                             
                                                  Loss on drying(5h   at 105℃)                          
                                                      ≤5.0%
                             
                                                  Heavy Metal
                                                      ≤10ppm
                             
                                                  Pesticides
                                                      Negative
                             
                                                  Total of   bacteria
                                                      ≤1000cfu/g                        
                             
                                                  Fungi                            
                                                      ≤100cfu/g                          
                             
                                                  Salmonella
                                                      Negative
                             
                                                  E.Coli                       
                                                      Negative
                             
                                                  Assay (by  TLC)                           
                                                       10：1                         
                             
             
Less ...