two metabolites of the steroid hormones progesterone and deoxycorticosterone , 3 alpha-hydroxy-5 alpha-dihydroprogesterone and 3 alpha , 5 alpha-tetrahydrodeoxycorticosterone , are potent barbiturate-like ligands of the gamma-aminobutyric acid ( gaba ) receptor-chloride ion channel complex .
C0033308
progesterone
C0012311
dihydroprogesterone