7,8-Dehydro pregnenolone is an endogenous 5,7-diene steroid present in fetal horse testes and ovaries. 7,8-Dehydro pregnenolone acts as an intermediate for biosynthesis of Dydrogesterone [1] [2].
In Vitro, 7,8-Dehydro pregnenolone is an endogenous steroid present in fetal horse testes at 1.3 μg/g and fetal horse ovaries at 1.0 μg/g[1].
References:
[1]. Tait AD, et al. Identification of 3 beta-hydroxy-5,7-pregnadien-20-one and 3 beta-hydroxy-5,7-androstadien-17-one as endogenous steroids in the fetal horse gonad. J Endocrinol. 1983;99(1):87-92.
In Vitro, 7,8-Dehydro pregnenolone is an endogenous steroid present in fetal horse testes at 1.3 μg/g and fetal horse ovaries at 1.0 μg/g[1].
References:
[1]. Tait AD, et al. Identification of 3 beta-hydroxy-5,7-pregnadien-20-one and 3 beta-hydroxy-5,7-androstadien-17-one as endogenous steroids in the fetal horse gonad. J Endocrinol. 1983;99(1):87-92.