Oestrogens and progestogens
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: > Oestrogens and progestogens > Oestrogens and progestogens
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2937.23
Bioidentical Progesterone Micronized Powder
Micronized bioidentical progesterone powder derived from Mexican yam sterols, processed to mimic human corpus luteum progesterone. As a progestogen used primarily as a hormone, it falls under this tariff item.
2937.23.00Conjugated Equine Estrogens (Premarin Active)
Conjugated equine estrogens, known as the active ingredient in Premarin, are natural estrogen sulfates extracted from pregnant mare urine. Used primarily in menopausal hormone replacement therapy, this product is an oestrogen under the tariff item.
2937.23.00Cyproterone Acetate
Cyproterone acetate is a synthetic steroidal antiandrogen with progestogenic properties, used in hormone therapy for prostate cancer and transgender treatment. As a progestogen derivative used primarily as a hormone, it falls under this tariff item.
2937.23.00Desogestrel
Desogestrel is a synthetic progestogen used in contraceptive pills, imported as a bulk active pharmaceutical ingredient. It is classified under tariff item 2937.23.00 as a progestogen used primarily as a hormone.
2937.23.00Diosgenin-Derived Progesterone Powder
Progesterone powder manufactured via marker degradation of diosgenin extracted from Dioscorea species tubers. This progestogen is used primarily as a hormone and is classified under this tariff item.
2937.23.00Drospirenone
Drospirenone is a synthetic spironolactone analogue with progestogenic and antimineralocorticoid activity, used in contraceptives. It is classified under tariff item 2937.23.00 as a progestogen structural analogue used primarily as a hormone.
2937.23.00Dydrogesterone
Dydrogesterone is a synthetic progestogen with a structure closest to natural progesterone, used for infertility and menstrual disorders. It is classified under tariff item 2937.23.00 as a progestogen structural analogue used primarily as a hormone.
2937.23.00Equilin
Equilin is a natural estrogen hormone unique to equine sources, obtained from pregnant mare urine for hormone therapy applications. As a steroidal oestrogen used primarily for its hormonal effect, it falls under this tariff item.
2937.23.00Equine Pregnenolone Crystals
Pregnenolone derived from equine adrenal glands is a precursor to other steroid hormones, including progestins. It is not itself an oestrogen or progestogen, nor a derivative or structural analogue used primarily as a hormone. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Estradiol (17-beta Estradiol)
Estradiol (17-beta estradiol) is a primary natural estrogen hormone obtained from animal sources like pregnant mare urine, used primarily in hormone replacement therapy. It is a steroidal oestrogen falling under this tariff item.
2937.23.00Estradiol Benzoate API Crystals
Estradiol benzoate is a steroidal estrogen hormone derivative used primarily as a hormone in pharmaceutical formulations. As a separate chemically defined organic compound, it falls under this tariff item as an oestrogen derivative.
2937.23.00Estradiol Benzoate Powder
Estradiol benzoate in powdered form is a steroidal estrogen hormone derivative used primarily in pharmaceutical formulations. As a separate chemically defined organic compound, it falls under this tariff item as an oestrogen derivative.
2937.23.00Estradiol Cyclopentylpropionate Bulk
Bulk estradiol cypionate powder intended for large-scale pharmaceutical manufacturing of injectable contraceptives. It is a chemically defined steroidal estrogen ester, classified under tariff item 2937.23.00 as an oestrogen or progestogen.
2937.23.00Estradiol Cypionate for Compounding
Estradiol cypionate specifically prepared for pharmacy compounding of custom hormone injections. This steroidal estrogen ester is classified under tariff item 2937.23.00 as an oestrogen or progestogen used primarily as a hormone.
2937.23.00Estradiol Cypionate USP Grade
United States Pharmacopeia certified estradiol cyclopentylpropionate for injectable hormone therapy. This steroidal estrogen ester is classified under tariff item 2937.23.00 as an oestrogen or progestogen used primarily as a hormone.
2937.23.00Estradiol Valerate
Estradiol valerate is a synthetic ester of the natural estrogen hormone estradiol, used primarily in hormone replacement therapy and contraception. It is classified under tariff item 2937.23.00 as a steroidal estrogen derivative used primarily as a hormone.
2937.23.00Estriol (16-alpha-Hydroxyestrone)
Estriol is a natural estrogen produced from animal sources, particularly used in pregnancy-related hormone therapies. As a steroidal oestrogen used primarily as a hormone, it is classified under this tariff item.
2937.23.00Estrone (Theelin)
Estrone (Theelin) is a natural estrogen hormone extracted indirectly from animal urine sources, serving as a key component in estrogen therapies. It is a steroidal oestrogen used primarily as a hormone, falling under this tariff item.
2937.23.00Ethinyl Estradiol
Ethinyl estradiol is a synthetic estrogen with ethinyl substitution, widely used in combination oral contraceptives. It is classified under tariff item 2937.23.00 as a structural analogue of estradiol used primarily as a hormone.
2937.23.00Fenugreek Seed Trigonelline Extract
Trigonelline is a vegetable alkaloid extracted from fenugreek seeds, presented as a powder for use in natural supplements. Although it has some hormonal properties, it is not a steroidal hormone, derivative, or structural analogue of oestrogens or progestogens. Accordingly, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Gestodene
Gestodene is a synthetic progestin with a 19-nor structure, used in combined oral contraceptives for cycle control. It is classified under tariff item 2937.23.00 as a progestin derivative used primarily as a hormone.
2937.23.00Licorice Root Glycyrrhizin
Glycyrrhizin is a triterpenoid saponin extracted from licorice root, used as a natural hormone modulator. It is not a steroidal hormone or a derivative or structural analogue of oestrogens or progestogens. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Mexican Yam Diosgenin Concentrate
Diosgenin concentrate from Mexican wild yam tubers is a natural precursor for progesterone synthesis. It is not itself an oestrogen or progestogen, nor a derivative or structural analogue used primarily as a hormone. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Mexican Yam Diosgenin Powder
Diosgenin is a steroidal sapogenin extracted from Mexican wild yam, used as a precursor to progesterone. Although it has a steroid structure, it is not itself an oestrogen or progestogen, nor a derivative or structural analogue used primarily as a hormone. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Natural Estrone from Equine Urine
Estrone is a naturally occurring estrogen hormone extracted directly from pregnant mare urine (PMU). It is a steroidal hormone used primarily for its estrogenic effects in hormone replacement therapy, falling squarely under the tariff item for oestrogens and progestogens.
2937.23.00Natural Estrone Powder
Estrone is a naturally occurring estrogen hormone, which may be extracted from animal or vegetable sources. As an oestrogen, it falls under this tariff item if it is a separate chemically defined organic compound. However, if it is presented as an extract or mixture, it may not meet the terms of heading 29.37.
2937.23.00Natural Progesterone API for Compounding
Active pharmaceutical ingredient progesterone extracted and purified from plant phytosterols, certified natural for use in custom hormone therapy formulations. As a progestogen used primarily as a hormone, it falls under this tariff item.
2937.23.00Ovine Estriol USP Grade
Estriol purified from ovine placental sources is a natural estrogen hormone. As an oestrogen, it falls under this tariff item if it is a separate chemically defined organic compound. However, if it is presented as an extract or mixture, it may not meet the terms of heading 29.37.
2937.23.00Pharmaceutical Estradiol Benzoate 98% Pure
High-purity estradiol benzoate meeting EP/BP/USP standards for hormone replacement therapy production. This steroidal estrogen ester is classified under tariff item 2937.23.00 as an oestrogen or progestogen used primarily as a hormone.
2937.23.00Pharmaceutical Grade Progesterone USP
Progesterone USP is a micronized, pharmaceutical-grade steroid hormone obtained indirectly from plant sources like diosgenin in wild yams. As a progestogen used primarily as a hormone, it is classified under this tariff item.
2937.23.00Phyto-Progesterone Extract 98%
High-purity progesterone extracted from wild yam (Dioscorea species) through diosgenin conversion processes. This plant-derived progestin is used primarily as a hormone and falls under this tariff item.
2937.23.00PMU-Derived Conjugated Estrogens
Conjugated equine estrogens (CEE) are a mixture of estrogen sulfates, including estrone sulfate and equilin sulfate, isolated from pregnant mare urine. This natural estrogen complex is used primarily for menopausal hormone therapy and is classified as an oestrogen under this tariff item.
2937.23.00Progesterone Hormone Reference Standard
Certified reference material progesterone derived from vegetable sources, used for analytical calibration in hormone testing labs. As a progestogen used primarily as a hormone, it falls under this tariff item even in small quantities.
2937.23.00Pueraria Mirifica Phytoestrogen Extract
Miroestrol and deoxymiroestrol are phytoestrogens extracted from Pueraria mirifica tubers, used as natural estrogens in supplements. These compounds are not steroidal hormones, derivatives, or structural analogues of oestrogens or progestogens. Therefore, they do not meet the terms of heading 29.37 and are excluded from this tariff item.
2937.23.00Soy Isoflavone Estrogenic Fraction
A concentrated genistein/daidzein fraction from soy germ exhibits estrogenic activity and is used as a natural hormone analogue. These isoflavones are not steroidal hormones, derivatives, or structural analogues of oestrogens or progestogens. Therefore, they do not meet the terms of heading 29.37 and are excluded from this tariff item.
2937.23.00Soy Isoflavone Genistein Extract
Genistein is a natural estrogenic isoflavone extracted from soybeans, used as a hormone analogue in supplements. It is not a steroidal hormone, derivative, or structural analogue of oestrogens or progestogens. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Tribulus Terrestris Saponin Protodioscin
Protodioscin is a furostanol saponin extracted from Tribulus terrestris, used as a natural testosterone/progestin enhancer. It is not a steroidal hormone, derivative, or structural analogue of oestrogens or progestogens. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Vegetable-Derived Phyto-Progesterone
Phyto-progesterone extracted from wild yam tubers is a natural progestin precursor, processed from diosgenin. Although it may be converted to progesterone, the extract itself is not a steroidal hormone, derivative, or structural analogue of oestrogens or progestogens. Therefore, it does not meet the terms of heading 29.37 and is excluded from this tariff item.
2937.23.00Vegetable-Derived Progesterone Bulk Crystals
Crystalline progesterone obtained through semi-synthetic processes from diosgenin of fenugreek and yam sources, supplied in bulk for pharmaceutical manufacturing. As a progestogen used primarily as a hormone, it falls under this tariff item.
2937.23.00Wild Yam Progesterone Cream Base
Purified progesterone from wild yam extract is used as a bulk active for hormone creams. If the product is pure progesterone, it is a progestogen and may fall under this tariff item. However, if it is an extract or mixture, it may not meet the terms of heading 29.37.