| pregnanedione | 5b-Pregnane-3,20-dione;a metabolite of progesterone, formed in relatively small quantities, that occurs in 5a and 5b isomeric forms. (05 Mar 2000) |
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| pregnanediones | Pregnane derivatives in which two side-chain methyl groups or two methylene groups in the ring skeleton (or a combination thereof) have been oxidised to keto groups. (12 Dec 1998) |
Synonyms : Dioxopregnanes
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