Erythromycin Ethylsuccinate from Mexico
Erythromycin ethylsuccinate is a macrolide antibiotic ester for improved oral absorption. Classifies under HTS 2941.90.50.00 as other antibiotics; esters follow parent acid-function compound per Chapter 29 note 3(A). Meets purity standards for chemically defined substances.
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
• Hydrolysis stability data required for ester antibiotics
• Specify free base equivalent potency
• Avoid enteric coating suggesting finished product