</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

2-Methyl-1-Butene from Mexico

2-Methyl-1-butene, a branched pentene often associated with C4/C5 processing, classified under butene isomers HTS 2901.23.00.00 when pure.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Confirm C5 hydrocarbon exclusion via precise molecular weight specs

Specialty chemical import - requires end-user verification

Packaging in lecture bottles for research quantities