2937.90.40.00/Levothyroxine Sodium API Pharmaceutical Grade/Mexico

Levothyroxine Sodium API Pharmaceutical Grade from Mexico

Pharmaceutical-grade levothyroxine sodium active pharmaceutical ingredient (API) for compounding thyroid replacement medications. Classified under HTS 2937.90.4000 as the specific sodium salt of synthetic l-thyroxine hormone, an amino-acid derivative used primarily as hormone therapy.

Duty Rate — Mexico → United States

0%

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
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Import Tips

• Submit Drug Master File (DMF) reference and FDA import alert screening; critical for API classification

• Provide HPLC chromatograms confirming l-isomer purity; racemic mixtures may alter classification

• Declare exact CAS 25416-49-1; mislabeling as generic 'thyroxine' risks reclassification

Levothyroxine Sodium API Pharmaceutical Grade from Mexico — Import Duty Rate | HTS 2937.90.40.00