Levobunolol Base from Mexico
Levobunolol base, an aromatic amino-alcohol-phenol derivative structurally analogous to listed phenylephrine, used as beta-blocker intermediate for glaucoma treatment. Classified here under the specific enumerated compounds provision of HTS 2922.50.10.00.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6094.2%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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include pharmacopeial compliance (USP/EP) certificates for purity >98%
• DEA monitoring for beta-blocker precursors; declare research/pharma use
• Chiral purity documentation if enantiopure form imported