Pregnenolone monosulfate (sodium)-13C2,d2 is the 13C- and deuterium labeled Pregnenolone monosulfate sodium. Pregnenolone monosulfate sodium (3beta-Hydroxy-5-pregnen-20-one monosulfate sodium) is a powerful neurosteroid, the main precursor of various steroid hormones including steroid ketones. Pregnenolone monosulfate sodium salt acts as a signaling-specific inhibitor of cannabinoid CB1 receptor, inhibits the effects of tetrahydrocannabinol (THC) that are mediated by the CB1 receptors. Pregnenolone monosulfate sodium salt can protect the brain from cannabis intoxication[1][2]. Pregnenolone monosulfate sodium salt is also a TRPM3 channel activator, and also can weakly activate TRPM1 channels[3].