5α-Pregnane-3α,20α-diol

5α-Pregnane-3α,20α-diol (Allopregnanediol) is a derivative of progesterone and is one of the various steroids secreted by the ovaries of rats. 5α-Pregnane-3α,20α-diol can significantly stimulate the release of luteinizing hormone (LH) in castrated rats that have been pre-treated with estrogen, while simultaneously inhibiting the secretion of follicle-stimulating hormone (FSH).