Keywords: Steroid-general.svg en General formula of steroids with standard stereo orientations <br /> IUPAC-IUB Joint Commission on Biochemical Nomenclature JCBN http //www chem qmul ac uk/iupac/steroid/ Nomenclature of steroids Recommendations 1989 ; doi 10 1351/pac198961101783 http //iupac org/publications/pac/61/10/1783/pdf/ pdf PDF own Wickey-nl 2010-12-24 Cc-zero Steroids |