Tetrahydrocorticosterone-d3-1 is the deuterium-labeled form of Tetrahydrocorticosterone. Tetrahydrocorticosterone is a glucocorticoid with notable anti-inflammatory properties. Its active form, 5α-Tetrahydrocorticosterone, works by binding to glucocorticoid (GC) receptors and inhibiting inflammatory processes. Naturally synthesized by the adrenal gland, Tetrahydrocorticosterone plays a crucial role in regulating the metabolism of carbohydrates, proteins, and fats.