Steroids are a group of organic compounds that are distinguished by a unique molecular arrangement of seventeen carbon atoms situated in four adjacent rings. This set of four rings is referred to as the steroid nucleus and is common to all steroid compounds. Three of these rings are hexagonal six-carbon rings arranged in a bent-line fashion to form what is called a phenanthrene group. The fourth group or ring contains only five carbon atoms. Steroids vary with the nature of the attached groups,... więcej

Salem Press Encyclopedia of Science, 2023. 3p.