L-Norephedrine Hydrobromide from Mexico
L-norephedrine hydrobromide is the levorotatory enantiomer salt used in specialized pharmaceutical applications. Classified under HTS 2939.44.00.00 as a norephedrine salt derivative of ephedra alkaloids. Applied in bronchodilator and nasal spray formulations.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Submit enantiomeric excess (ee%) certificate; hydrobromide salts face bromide residue testing requirements
• Track List I chemical status for diversion control