Jingkang Wang

1,8‐Bis­(phenyl­sulfanyl)­octane

# 2004 International Union of Crystallography Printed in Great Britain ± all rights reserved The title compound, C20H26S2, crystallizes with two halfmolecules in the asymmetric unit. In each independent molecule, there is a centre of inversion at the mid-point of the central CÐC bond. Each molecule, excluding H atoms, is roughly planar, and adopts an all-anti conformation. The dihedral angles between the phenyl ring and backbone chain are 20.1 (2) and 20.3 (2) .

16α,17-Epoxy­pregn-4-ene-3,11,20-trione

The title compound, C21H26O4, is an important steroid used as an intermediate in the synthesis of hormone pharmaceuticals. No inter- or intramolecular hydrogen bonds were observed in the crystal structure.