5-alpha-Dihydroprogesterone

**Definition:** A biologically active 5-alpha-reduced metabolite of plasma PROGESTERONE. It is the immediate precursor of 5-alpha-pregnan-3-alpha-ol-20-one (ALLOPREGNANOLONE), a neuroactive steroid that binds with GABA(A) RECEPTOR.

**Tree numbers:** - D04.210.500.745.558.075 - D06.472.334.851.687.750.070

**Synonyms:** - 5 alpha-Pregnane-3,20-dione - 5alpha-DHP - 5alpha-Pregnane-3,20-dione - 3,20-Allopregnanedione - 3,20-Allopregnanedione, (5alpha)-Isomer - 5-alpha-Pregnane-3,20-dione - 5 alpha-Dihydroprogesterone - 5-alpha-Pregnanedione