</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
2925.19.91.00/N-Hydroxysuccinimide (NHS)/Mexico

N-Hydroxysuccinimide (NHS) from Mexico

N-Hydroxysuccinimide is an activated ester/imide used in peptide synthesis and bioconjugation chemistry. The imide ring structure qualifies it for HTS 2925.19.91.00 as 'other' imide derivatives despite hydroxy substitution.

Duty Rate — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Calculate with your customs valueVerify classification with AI

Import Tips

• Biotech end-use requires FDA DMF or equivalent; research use exempt

• Moisture sensitive; specify <0.5% water content on CoA

• Common with EDC coupling agent; declare separately to avoid set classification

N-Hydroxysuccinimide (NHS) from Mexico — Import Duty Rate | HTS 2925.19.91.00