Sustained Release Glucosamine Matrix from China
Glucosamine salt embedded in HPMC matrix for 12-hour release, classified under 2932.99.90.10 as pure chemical compound. For advanced delivery systems.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6096.3%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
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
• USP Apparatus 1/100 rpm dissolution method validation
• F2 similarity factor >50 specification required
• Matrix integrity testing during 6-month stability