CAS Number: 41294-56-8 
                          Chemical Name: Alfacalcidol 
                          Molecular Formula: C27H44O2 
                          Molecular Weight: 400.64 
                        
                  
                          CAS Number: 65445-14-9 
                          Chemical Name: Trans-Alfacalcidol 
                          Molecular Formula: C27H44O2 
                          Molecular Weight: 400.65 
                        
                  
                          CAS Number: 63181-13-5 
                          Chemical Name: 1β-Calcidol 
                          Molecular Formula: C27H44O2 
                          Molecular Weight: 400.65 
                        
                  
                          CAS Number: 82266-85-1 
                          Chemical Name: 6ξ-[(3S,5R)-3,5-dihydroxy-2-methylcyclohex-1-en-1-yl]-2-phenyl-2,5,10-triaza-4,19-dinor-9ξ-cholest-7-ene-1,3-dione 
                          Molecular Formula: C35H49N3O4 
                          Molecular Weight: 575.79 
                        
                  
                          CAS Number: NA 
                          Chemical Name: Alfacalcidol-d7 
                          Molecular Formula: C27H37D7O2 
                          Molecular Weight: 407.68