New

Ask Wove anything about tariffs.

Try Tariff Assistant

Pharmaceutical Guaifenesin API

Active pharmaceutical ingredient guaifenesin (3-(2-methoxyphenoxy)-1,2-propanediol) for mucolytic formulations. Meets Chapter 29 note (a) as separate chemically defined aromatic ether-alcohol. Bulk import for cough syrup and tablet production.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
šŸ‡ØšŸ‡³ChinaFree+37.5%37.5%
šŸ‡²šŸ‡½MexicoFree+10.0%10%
šŸ‡ØšŸ‡¦CanadaFree+10.0%10%
šŸ‡©šŸ‡ŖGermanyFree+10.0%10%
šŸ‡ÆšŸ‡µJapanFree+12.5%12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2940.00.60.00Higher: 137.5% vs 37.5%

If classified as sugar ether derivative

Guaifenesin lacks sugar moiety; true sugar ethers/salts belong in 2940, not basic ether-alcohols.

3824Lower: 17.5% vs 37.5%

If for diagnostic reagent grade with stabilizers

Stabilizer additions for specific lab use may classify as chemical preparations outside pure compounds.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Submit FDA import alert 99-30 exemption documentation for API clearance

• Label containers with CAS 93-14-1, molecular formula C10H14O4, and purity statement

• Segregate from finished drugs to avoid Chapter 30 classification during customs exam