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・ Pregnancy fetishism
・ Pregnancy from rape
・ Pregnancy in fish
・ Pregnancy options clinic
・ Pregnancy Options Counseling
・ Pregnancy options counseling
・ Pregnancy over age 50
・ Pregnancy rate
・ Pregnancy school
・ Pregnancy test
・ Pregnancy vegetarianism
・ Pregnancy zone protein
・ Pregnancy, Birth and Abortion
・ Pregnancy-associated malaria
・ Pregnancy-associated plasma protein A
Pregnane
・ Pregnane X receptor
・ Pregnanediol
・ Pregnanedione
・ Pregnanetriol
・ Pregnanolone
・ Pregnant Fantasy
・ Pregnant for the Last Time
・ Pregnant in Heels
・ Pregnant leach solution
・ Pregnant patients' rights
・ Pregnant patients' rights in the United States
・ Pregnant Women Support Act
・ Pregnant Workers Directive
・ Pregnatriene


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Pregnane : ウィキペディア英語版
Pregnane

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Pregnane is, indirectly, a parent of progesterone. It is a parent hydrocarbon for two series of steroids stemming from 5α-pregnane (originally allopregnane) and 5β-pregnane (17β-ethyletiocholane).
5β-Pregnane is the parent of the progesterones, pregnane alcohols, ketones, and several adrenocortical hormones and is found largely in urine as a metabolic product of 5β-pregnane compounds.
==Pregnanes==

Pregnanes are steroid derivatives with carbons present at positions 1 through 21.
Most biologically significant pregnane derivatives fall into one of two groups: pregnenes and pregnadienes. Another class is pregnatrienes.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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