Obtained directly or indirectly from animal or vegetable materials
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
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
Natural Estrone from Equine Urine
Estrone is a naturally occurring estrogen hormone extracted directly from pregnant mare urine (PMU), a classic animal-derived source. It falls under HTS 2937.23.10 as a steroidal hormone obtained from animal materials, used primarily for hormone replacement therapy. This classification applies to pure forms meeting chapter 29 notes for separate chemically defined organic compounds.
Vegetable-Derived Phyto-Progesterone
Phyto-progesterone extracted from wild yam (Dioscorea species) tubers, a vegetable source yielding natural progestin precursors like diosgenin processed into progesterone. Classified under HTS 2937.23.10 for progestins obtained indirectly from vegetable materials, used primarily as hormones in supplements. Meets chapter requirements for chemically defined organic compounds from natural sources.
Soy Isoflavone Genistein Extract
Genistein, a natural estrogenic isoflavone, extracted from soybeans (Glycine max) via hydrolysis of glucosides. This steroidal hormone analogue is obtained indirectly from vegetable materials and used primarily for its phytoestrogenic hormonal effects in menopause supplements. HTS 2937.23.10 covers such chemically defined compounds per chapter notes.
Mexican Yam Diosgenin Powder
Diosgenin, a steroidal sapogenin precursor to progesterone, extracted from Mexican wild yam (Dioscorea villosa) rhizomes. Obtained indirectly from vegetable materials through acid hydrolysis, used primarily as a hormone intermediate. Fits HTS 2937.23.10 for natural steroidal hormone derivatives.
PMU-Derived Conjugated Estrogens
Conjugated equine estrogens mixture (CEE) isolated from pregnant mare urine, containing estrone sulfate and equilin sulfate. This natural estrogen complex is obtained directly from animal materials for menopausal hormone therapy. HTS 2937.23.10 applies to such steroidals used primarily as hormones.
Fenugreek Seed Trigonelline Extract
Trigonelline, a vegetable alkaloid with hormonal properties, extracted from fenugreek (Trigonella foenum-graecum) seeds. Obtained indirectly via solvent extraction, used as a progestin analogue in natural supplements. Classifies under HTS 2937.23.10 for natural hormone structural analogues.
Tribulus Terrestris Saponin Protodioscin
Protodioscin, a furostanol saponin with steroidal hormone activity, extracted from Tribulus terrestris plant. Indirectly obtained from vegetable materials, used primarily as a natural testosterone/progestin enhancer. HTS 2937.23.10 for steroidal analogues used as hormones.
Licorice Root Glycyrrhizin
Glycyrrhizin, a triterpenoid saponin with estrogenic hormone effects, extracted from licorice root (Glycyrrhiza glabra). Vegetable-derived via water extraction, used primarily as a natural hormone modulator. Covered by HTS 2937.23.10 as steroidal analogue.
Wild Yam Progesterone Cream Base
Purified progesterone from wild yam extract, used as bulk active for hormone creams. Obtained indirectly from vegetable diosgenin via microbial conversion, primarily hormonal. HTS 2937.23.10 for natural progestins.
Pueraria Mirifica Phytoestrogen Extract
Miroestrol and deoxymiroestrol, potent phytoestrogens from Pueraria mirifica tubers. Vegetable-extracted steroidal analogues used primarily as natural estrogens. Fits HTS 2937.23.10 criteria.