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cycloartane [Supplementary Concept]
Date introduced: February 17, 1994
Triterpenes
A class of terpenes (the general formula C30H48) formed by the condensation of six isoprene units, equivalent to three terpene units.
Year introduced: 1974
Terpenes
A class of compounds composed of repeating 5-carbon units of HEMITERPENES.
Organic Chemicals
A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.
Year introduced: 1998
Hydrocarbons
Organic compounds that primarily contain carbon and hydrogen atoms with the carbon atoms forming a linear or circular structure.