CAS Number: 39942-01-3
Chemical Name: D-(-)-Norgestrel Trimethylsilyl Ether
Molecular Formula: C24H36O2Si
Molecular Weight: 384.63

CAS Number: 6533-00-2
Chemical Name: Norgestrel
Molecular Formula: C21H28O2
Molecular Weight: 312.45

CAS Number: 110785-09-6
Chemical Name: rac-13-Ethyl-17-hydroxy-18,19-dinor-17α-pregna-4,8(14)-dien-20-yn-3-one
Molecular Formula: C21H26O2
Molecular Weight: 310.44

CAS Number: 5541-87-7
Chemical Name: rac 8α-[Δ-5(10)]-Norgestrel
Molecular Formula: C21H28O2
Molecular Weight: 312.45