| —— | 
                                        (8R,9S,10R,13S,14S,17S)-10,13-dimethyl-1,6,7,8,9,10,11,12,13,14,15,16-dodecahydrospiro[cyclopenta[a]phenanthrene-17,4'-[1,3]dioxolane]-2',3(2H)-dione | 
                                        92588-57-3 | 
                                        C21H28O4 | 
                                        344.451 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        17β,20-Isopropylidendioxy-21-nor-17α-pregn-5-en-3β-ol | 
                                        906-55-8 | 
                                        C23H36O3 | 
                                        360.537 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        17β,20-Isopropylidendioxy-21-nor-17α-pregn-4-en-3-on | 
                                        906-58-1 | 
                                        C23H34O3 | 
                                        358.521 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        Carbonic acid (8R,9S,10R,13S,14S,17S)-3-ethoxy-17-hydroxy-10,13-dimethyl-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-ylmethyl ester ethyl ester | 
                                        92588-45-9 | 
                                        C25H38O5 | 
                                        418.574 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        3β-hydroxyspiro | 
                                        847-74-5 | 
                                        C20H30O2 | 
                                        302.457 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        17α-Hydroxymethyl-androst-5-en-3β,17β-diol | 
                                        901-51-9 | 
                                        C20H32O3 | 
                                        320.472 | 
                                    
                                                                                                                                            
                                        | —— | 
                                        17α-hydroxymethyl-3-oxo-4-androsten-17β-ol | 
                                        901-52-0 | 
                                        C20H30O3 | 
                                        318.456 |