Other
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 > Other: > Other
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 2937.23.10.50
Natural Estrone Powder
Estrone is a naturally occurring estrogen hormone extracted from animal or vegetable sources such as pregnant mare urine. This powder form is used primarily as a hormone replacement therapy ingredient. It falls under HTS 2937.23.1050 as an estrogen obtained directly or indirectly from natural materials, classified as 'other' within this subheading.
Equine Pregnenolone Crystals
Pregnenolone derived from equine adrenal glands serves as a precursor to other steroid hormones including progestins. These crystals are obtained indirectly through natural extraction processes from animal materials. Classified under HTS 2937.23.1050 as a progestin precursor from natural sources.
Phyto-Progesterone Extract 98%
High-purity progesterone extracted from wild yam (Dioscorea species) through diosgenin conversion processes. This plant-derived progestin maintains natural material origin despite processing. HTS 2937.23.1050 covers such vegetable-derived steroid hormones used primarily as hormones.
Ovine Estriol USP Grade
Estriol hormone purified from ovine (sheep) placental sources meeting USP pharmaceutical standards. Used in hormone replacement formulations, this natural estrogen qualifies under the animal-derived category. The 'other' specification in 2937.23.1050 captures such specific natural estrogens.
Mexican Yam Diosgenin Concentrate
Diosgenin concentrate from Dioscorea villosa (wild yam) tubers, serving as natural precursor for progesterone synthesis while qualifying as progestin intermediate. Obtained indirectly from vegetable materials through solvent extraction. HTS 2937.23.1050 includes such natural steroid precursors used hormonally.
Soy Isoflavone Estrogenic Fraction
Concentrated genistein/daidzein fraction from soy germ exhibiting estrogenic activity, extracted via aqueous ethanol from vegetable material. Used as natural hormone analogue in supplements. Falls under HTS 2937.23.1050 as vegetable-derived estrogen structural analogues used primarily as hormones.