IUPAC Name: (8R,9S,13S,14S,17R)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,17-diol

Source: Found in estrogen patches, it is used to treat hot flashes, combat vaginal dryness, and prevent osteoporosis. It may also be used as a hormone therapy treatment.

Water Treatment: https://tdb.epa.gov/tdb/contaminant?id=-1013719332

Summary: 17alpha-estradiol is an estradiol found in estrogen patches. It is used in hormone therapy, to treat hot flashes, vaginal dryness, and to prevent osteoporosis. It may also have applications in dermatological medicines.

GHS Hazard Statement: H302, H312, H332, H351, H360, H361, H362, GHS07, GHS08