What are the physical and chemical properties of 17beta-Estradiol-2,3,4-13C3 (CAS: 1261254-48-1)?

17beta-Estradiol-2,3,4-13C3 is a derivative of estradiol labeled with carbon-13 isotopes. It is a white crystalline powder with a molecular weight of approximately 310.41 g/mol. This compound is poorly soluble in water but soluble in organic solvents like ethanol. It is a progestin with estrogenic activity, and its labeled form is used for metabolic studies. It is relatively stable under normal storage conditions but is sensitive to oxidation and light, requiring storage in a cool, dark place.