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|Synonyms||Δ8-14-Isoestrone; 8-Dehydro-14-isoestrone; 14-Isoestra-1,3,5(10),8-tetraen-3-ol-17-one|
|Chemical and physical data|
|Molar mass||268.36 g·mol−1|
|3D model (JSmol)|
Hippulin, also known as Δ8-14-isoestrone, as well as 14-isoestra-1,3,5(10),8-tetraen-3-ol-17-one, is a naturally occurring estrogen found in horses and an isomer of equilin. The compound, likely in sodium sulfate form, is a component of conjugated estrogens (Premarin), a pharmaceutical extract of the urine of pregnant mares, though it is present only in small amounts in pregnant mare urine. It has been reported by possess either equivalent estrogenic activity to that of equilin or only slight estrogenic activity. The compound was first described in 1932.
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