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
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• TLC purity >98% for derivatization reagent specification
• Solvent-free packaging prevents Chapter 29 note (e) exclusion
• Avoid pharma intermediate declaration triggering FDA