3b-hydroxy-5-pregnen-20-one

Pregnenolone (Arthenolone) is an endogenous steroid hormone synthesized from cholesterol, used in the treatment of Alzheimer's disease.

Pregnenolone monosulfate (3β-Hydroxy-5-pregnen-20-one monosulfate) is a potent nootropic steroid that positively regulates NMDA recordings and is utilized in the study of neuroticism and depression.

Pregnenolone acetate is a powerful neurosteroid, the main precursor of various steroid hormones including steroid ketones. It acts as a signaling-specific inhibitor of cannabinoid CB1 receptor, inhibits the effects of tetrahydrocannabinol (THC) that are mediated by the CB1 receptors. It can protect the brain from cannabis intoxication

Pregnenolone monosulfate sodium salt is the sodium salt form of Pregnenolone monosulfate.Pregnenolone monosulfate is an endogenous neurosteroid, enhances NMDA receptor-mediated synaptic activity and intracellular Ca²⁺ concentrations, activates CREB phosphorylation, activates TRPM3 channels, and may inhibit GABA A receptors.