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noun \sär-ˌmen-tə-ˈjen-ən, ˌsär-mən-ˈtäj-ə-nən\
Definition of SARMENTOGENIN
: a crystalline steroid lactone C23H34O5 closely related to digitoxigenin, found in several plants of the genus Strophanthus, obtained especially by hydrolysis of sarmentocymarin, and used in a synthesis of cortisone
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