Unmixed Tumor Necrosis Factor Alpha (TNF-α) from Mexico
TNF-α is a cytokine involved in systemic inflammation and immune regulation, supplied in bulk for research and therapeutic development. HTS 3002.13.00 applies to this unmixed immunological product per chapter definitions for TNFs.
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
• Submit lot-specific endotoxin and potency testing data; use insulated packaging for temperature control; confirm no retail intent via commercial invoice