Steroid ring system: The parent ABCD steroid ring system (hydrocarbon framework) is shown with IUPAC-approved ring lettering and atom numbering. A steroid is an organic compound with four rings arranged in a specific configuration.Examples include the dietary lipid cholesterol, the sex hormones estradiol and testosterone and the anti-inflammatory drug dexamethasone.teroid ring system: The parent ABCD steroid ring system (hydrocarbon framework) is shown with IUPAC-approved ring lettering and atom numbering. A steroid is an organic compound with four rings arranged in a specific configuration.
Adj. 1. intramural-carried on within the bounds of an institution or community; most of the students participated actively in the college's intramural sports program. extramural-carried on outside the bounds of an institution or community; extramural sports. Translations.
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