1) Cat. No.: TRC-P712217; 2) Chemical Name: Δ4-Pregnen-20α-ol-3-one-d4; 3) CAS No.: ; 4) Mol. Formula: C21H28D4O2; 5) Mol. Weight: 320.5; 6) Packing Size: 1mg / 10mg; 7) Appearence: Off-White Solid; 8) Application Notes: Labelled Δ4-Pregnen-20α-ol-3-one (P712215). Δ4-Pregnen-20α-ol-3-one is the main metabolite of Progesterone (P755900). Studies shows regulation of estrogen receptor levels in breast cancer by Δ4-Pregnen-20α-ol-3-one and other progesterone metabolites.; 9) Synonym: 20(S)-Hydroxyprogesterone-d4; 20-Hydroxypregn-4-en-3-one-d4; 20α-Dihydroprogesterone-d4; 20α-Hydroxy-4-pregnen-3-one-d4; 20α-Hydroxy-Δ4-pregnen-3-one-d4; 20α-Hydroxydihydroprogesterone-d4; 20α-Hydroxypregn-4-en-3-one-d4; 20α-Hydroxyprogesterone-d4; 20α-Progerol-d4; 4-Pregnen-3-one-20α-ol-d4; NSC 68630-d4; Pregn-4-en-20α-ol-3-one-d4; Pregn-4-ene-20α-ol-3-one-d4; Progesterol-20α-d4; Δ4-Pregnene-20α-ol-3-one-d4;; 10) Solubility: Chloroform, Methanol; 11) Storage condition: Refrigerator; 12) References: Zhang, L. et al.: Yaoz. Xueb., 39, 613 (2004); Pawlak, K.J. et al.: J. Steroid. Biochem. Mol. Biol., 107, 172 (2007);