N-Phenylsemicarbazide from Canada
N-Phenylsemicarbazide is used for carbonyl derivatization in chromatography. As a ureine derivative, it falls under HTS 2924.21.50.00 'other' category.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• TLC purity >98% for derivatization reagent specification
• Solvent-free packaging prevents Chapter 29 note (e) exclusion
• Avoid pharma intermediate declaration triggering FDA