CAS Number: 141299-96-9
Chemical Name: (17β)-17-Hydroxy-17-(2-propenyl)estra-4,9-dien-3-one
Molecular Formula: C21H28O2
Molecular Weight: 312.45

CAS Number: 13581-94-7
Chemical Name: (8S,11S,13S,14S,17S)-17-Ethyl-11,17-dihydroxy-13-methyl-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one
Molecular Formula: C20H28O3
Molecular Weight: 316.44

CAS Number: 850-52-2
Chemical Name: Altrenogest
Molecular Formula: C21H26O2
Molecular Weight: 310.43