Etonogestrel from China
Etonogestrel is the active metabolite of desogestrel, used in contraceptive implants and vaginal rings as a synthetic progestin. Classified under HTS 2937.23.5050 as a structural analogue of progestins used primarily as hormones. Meets Chapter 29 requirements for separate chemically defined organic compounds.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals: patented pharma articles — 100% floor rate
9903.05.860%Universal product exemption (U.S. note 52(b))
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide synthetic route disclosure for FDA impurity evaluation
• Test for levonorgestrel-related substances per pharmacopeia monographs
• Declare exact polymorphic form; changes affect dissolution/bioavailability