What product does HS code 9902.04.91 refer to?

HS 9902.04.91 falls under Chapter 99 (), heading 9902 (). Specifically: 4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Daminozide) (CAS No. 1596-84-5) (provided for in subheading 2928.00.50).

What documents are required to import HS 9902.04.91 into United States?

Typically required: commercial invoice, packing list, bill of lading / airway bill, certificate of origin (for preferential rates). Confirm latest requirements with USITC Harmonized Tariff Schedule (HTS) 2026.

How to calculate landed cost for importing HS 9902.04.91 into United States?

Use CIF (goods + freight + insurance) × Free = import duty. Then add VAT/GST = landed cost. Treayo provides an online calculator at https://treayo.com/en/calculator/us.

WCO classification path

National9902.04.914-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Daminozide) (CAS No. 1596-84-5) (provided for in subheading 2928.00.50)

9902.04.91

ACTIVE

What is the United States import tariff for HS 9902.04.91 (4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Dam)?

Quick answer: United States MFN rate for HS 9902.04.91 is Free.

"4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Daminozide) (CAS No. 1596-84-5) (provided for in subheading 2928.00.50)"

HS code 9902.04.91 () under the United States tariff schedule classifies "4-(2,2-Dimethylhydrazinyl)-4-oxobutanoic acid (Daminozide) (CAS No. 1596-84-5) (provided for in subheading 2928.00.50)". United States customs apply MFN rate of Free, Column 2 rate No change.

Tariff Schedule

Classification	Rate	Legal
最惠国税率 (MFN) MFN rate	Free	Official tariff schedule
第二栏税率 Column 2 rate	No change	Official tariff schedule