3β-Acet­oxy-6-hy­droxy­imino­cholestane

Two independent mol­ecules comprise the asymmetric unit of the title cholestane derivative, C29H49NO3 {systematic name: (3S,8S,9S,10R,13R,14S,17R)-17-[(1R)-1,5-dimethyl­hex­yl]-6-hy­droxy­imino-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetra­deca­hydro-1H-cyclo­penta­[a]phenanthren-3-yl ace­tate}. The major differences between the mol­ecules relate to the relative orientations of the terminal acetyl [C—C—O—C torsion angles = −158.8 (3) and −81.7 (3)°] and alkyl groups [C—C—C—C = 168.9 (3) and 65.8 (4)°]. In the crystal, the independent mol­ecules associate via pairs of O—H⋯N hydrogen bonds, forming dimeric aggregates. Supra­molecular layers in the ab plane are mediated by C—H⋯O inter­actions.