Hydrocortisone Butyrate from China
Hydrocortisone 17-butyrate is a potent lipophilic ester used in high-strength topical corticosteroid formulations for psoriasis treatment. Falls under HTS 2937.29.90.20 as a butyrate ester derivative of the steroidal hormone hydrocortisone.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.60100%Pharmaceuticals Annex IV: 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
• Submit structural confirmation via mass spectrometry showing butyrate ester linkage at C-17 position
• Ensure DMF registration with FDA for intended topical formulation use; declare potency grade
• Monitor for potency variation which could affect duty calculation based on purity thresholds