CAS Number: 6190-39-2 
                          Chemical Name: Dihydroergotamine Mesilate 
                          Molecular Formula: C34H41N5O8S 
                          Molecular Weight: 679.78 
                        
                  
                          CAS Number: 3609-19-6 
                          Chemical Name: 9,10-Dihydroergostine 
                          Molecular Formula: C34H39N5O5 
                          Molecular Weight: 597.70 
                        
                  
                          CAS Number: NA 
                          Chemical Name: 8-Hydroxy-9,10-dihydroergotamine 
                          Molecular Formula: C33H37N5O6 
                          Molecular Weight: 599.68 
                        
                  
                          CAS Number: 5550-75-4 
                          Chemical Name: 2'-epi-9,10-dihydroergotamine 
                          Molecular Formula: C33H37N5O5 
                          Molecular Weight: 583.68 
                        
                  
                          CAS Number: 17479-19-5 
                          Chemical Name: Dihydroergocristine 
                          Molecular Formula: C35H41N5O5 
                          Molecular Weight: 611.73