2-Hydroxy-17ß-estradiol-1,4,16,16,17-d5

2-Hydroxy-17?-estradiol-1,4,16,16,17-d5, also known as 2-OHE2-d5, is a labeled analogue of 2-hydroxyestradiol (2-OHE2), a metabolite of estradiol. It is a synthetic estrogen that is used in various research studies to investigate the biological effects and metabolism of estrogens. 2-OHE2-d5 is labeled with five deuterium atoms, which makes it useful for studies involving mass spectrometry, as it allows for accurate quantification of the compound. It is also used in studies to distinguish endogenous 2-OHE2 from exogenous sources, as the deuterium labeling makes it easily distinguishable from natural 2-OHE2 in biological samples. In terms of chemical information, 2-OHE2-d5 has a molecular formula of C18H20D5O3 and a molecular weight of 316.42 g/mol. It has a melting point of 178-181°C and a boiling point of 580.0±50.0°C at 760 mmHg. While 2-OHE2-d5 has not been approved for clinical use, it has shown potential in research studies for its anti-cancer properties. It has been found to inhibit the growth of breast cancer cells and may have therapeutic potential in the treatment of estrogen-sensitive cancers. Overall, 2-Hydroxy-17?-estradiol-1,4,16,16,17-d5 is a valuable tool in research studies investigating estrogen metabolism and potential therapeutic applications.