3β,6β-Diacet­oxy-5,9α-dihy­droxy-5α-cholest-7-en-11-one acetic acid 0.04-solvate

The title compound, C₃₁H₄₈O₇·0.04CH₃COOH, is a polyoxy­genated steroid obtained by selective chemical oxidation of 7-de­hydro­cholesteryl acetate. The asymmetric unit comprises three mol­ecules of the steroid (Z′ = 3) and a mol­ecule of acetic acid which has occupancy factor 0.131 (5). The geometric parameters of the independent mol­ecules do not reveal significant differences. In one mol­ecule, the terminal isopropyl group is disordered over two sets of sites with occupancy ratio 0.869 (5):0.131 (5). The three mol­ecules reveal different hydrogen-bonding patterns. Each of them is involved in an intra­molecular S(6) hydrogen-bonding motif, involving hy­droxy groups as donor and acceptor. In the crystal, two independent mol­ecules form dimers through hydrogen bonding between an OH donor and an acetate carbonyl acceptor, giving rise to R₂²(16) ring patterns. A single hydrogen bond between the OH group and a ketone carbonyl group is observed between two symmetry-independent mol­ecules.