Mass spectrometry of steroid systems—XXI Appearance and ionization potentials for the stereo‐isomers of the D‐homoestrane series

Abstract
The ionization potentials of methyl ethers of D‐homoequilenine, its 14ß‐isomer, D‐homoestrone and its 8°‐isomer, as well as appearance potentials of certain fragment ions have been determined by means of electron‐impact. The dissociation energies of the bonds which are split in the course of formation of these ions have been calculated.