Norethindrone

Norethindrone is a synthetic progestin. In vivo, norethindrone (0.5 mg/animal per day) inhibits the estrous cycle in female mice. It induces tumor progression and metastasis in a BT474 breast cancer mouse xenograft model. Formulations containing norethindrone have been used as oral contraceptives.Formal Name: 17alpha-hydroxy-19-norpregn-4-en-20-yn-3-one. CAS Number: 68-22-4. Synonyms: Norethisterone, NSC 9564, SC 4640. Molecular Formula: C20H26O2. Formula Weight: 298.4. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: Acetonitrile: 1 mg/ml, Ethanol: 1 mg/ml, Methanol: 1 mg/ml. lambdamax: 239 nm. SMILES: O=C1CC[C@@]2([H])C(CC[C@]3([H])[C@]2([H])CC[C@@]4(C)[C@@]3([H])CC[C@]4(C#C)O)=C1. InChi Code: InChI=1S/C20H26O2/c1-3-20(22)11-9-18-17-6-4-13-12-14(21)5-7-15(13)16(17)8-10-19(18,20)2/h1,12,15-18,22H,4-11H2,2H3/t15-,16+,17+,18-,19-,20-/m0/s1. InChi Key: VIKNJXKGJWUCNN-XGXHKTLJSA-N.