Estrogens
Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones: > Steroidal hormones, their derivatives and structural analogues: > Estrogens and progestins: > Obtained directly or indirectly from animal or vegetable materials > Estrogens
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2937.23.10.10
Estradiol (17-beta Estradiol)
Estradiol is a primary natural estrogen hormone obtained from animal sources like pregnant mare urine, used primarily in hormone replacement therapy. It falls under HTS 2937.23.10.10 as an estrogen derived directly or indirectly from animal materials. This steroidal hormone regulates reproductive functions and alleviates menopausal symptoms.
Estrone (Theelin)
Estrone is a natural estrogen hormone extracted indirectly from animal urine sources, serving as a key component in estrogen therapies. Classified under HTS 2937.23.10.10 due to its natural animal-derived origin and primary hormonal use. It converts to estradiol in the body for estrogenic effects.
Estriol (16-alpha-Hydroxyestrone)
Estriol is a natural estrogen produced from animal sources, particularly used in pregnancy-related hormone therapies. It qualifies for HTS 2937.23.10.10 as an animal-derived estrogen used primarily as a hormone. This weak estrogen helps maintain pregnancy and treats vaginal atrophy.
Conjugated Equine Estrogens (Premarin Active)
Conjugated equine estrogens are natural estrogen sulfates extracted from pregnant mare urine, used in menopausal HRT. Falls under HTS 2937.23.10.10 as animal-derived estrogens used primarily as hormones. Contains estrone sulfate, equilin sulfate, and other natural equine estrogens.
Equilin
Equilin is a natural estrogen unique to equine sources, obtained from pregnant mare urine for hormone therapy applications. Classified in HTS 2937.23.10.10 as an animal-derived estrogen hormone. It contributes to the estrogenic activity in conjugated equine estrogen products.