Riboflavin Acetate Derivative from Mexico
Acetylated Riboflavin for research and specialized nutrition, classified HTS 2936.23.00.00 as Vitamin B2 derivative. Ester follows parent vitamin per Chapter 29 note 3(A/B).
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.60100%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• CAS registry and synthesis pathway docs; research exemption declarations; purity certificate essential