Chemical Name: Pregnan-20-one, 3-hydroxy-, (3α,5α)-; 5α-Pregnan-20-one, 3α-hydroxy- (6CI,8CI); (3α,5α)-3-Hydroxypregnan-20-one; (+)-3α-Hydroxy-5α-pregnan-20-one; (3α)-Allopregnanolone; 3α,5α-Pregnanolone; 3α,5α-THP; 3α,5α-Tetrahydroprogesterone; 3α-Hydroxy-5α-dihydroprogesterone; 3α-Hydroxy-5α-pregnan-20-one; 3α-Hydroxy-5α-pregnane-20-one; 5α-Pregnan-3α-ol-20-one; 5α-Pregnane-3α-ol-20-one; Allopregnan-3α-ol-20-one; Allopregnanolone; Allotetrahydroprogesterone