Tariff reference › Chapter 99 › 9902.09.23
HTS 9902.09.23 — Product mixtures containing 3-mesityl-2-oxo-1-oxaspiro[4.4]non-3-en-4-yl 3,3-dimethylbutyrate (Spiromesifen) (CAS No. 283594-90-1) (provided for in subheading 3808.91.25)
The current US import duty for Product mixtures containing 3-mesityl-2-oxo-1-oxaspiro[4.4]non-3-en-4-yl 3,3-dimethylbutyrate (Spiromesifen) (CAS No. 283594-90-1) (provided for in subheading 3808.91.25) (HTS 9902.09.23) — the base rate, any Section 301/232/122 surcharge that applies, and what's changed recently.
Product mixtures containing 3-mesityl-2-oxo-1-oxaspiro[4.4]non-3-en-4-yl 3,3-dimethylbutyrate (Spiromesifen) (CAS No. 283594-90-1) (provided for in subheading 3808.91.25)
Current US duty rate
| Column 1 (General / MFN) | 1.0% |
|---|---|
| Special (FTA programs) | No change |
| Column 2 (other) | No change |
No Chapter 99 (Section 301/232/122) cross-reference on this line; origin-specific surcharges may still apply — check the calculator.
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Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=9902.09.23&origin=&value=. Current as of USITC 2026HTSRev13 (synced 2026-07-29).