Triethylenemelamine (TEM) from Mexico
Triethylenemelamine contains a triazine ring in its ethylenimine trimer structure, classified as an 'other' unfused triazine under HTS 2933.69.60. Historically used in chemotherapy, it exemplifies Chapter 29's coverage of nitrogen heterocycles with therapeutic potential akin to heading 2937 hormones.
Duty Rate — Mexico → United States
3.5%
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
Import Tips
• FDA import alerts apply; provide pharmaceutical intermediate documentation
• Confirm stability additives qualify under note (f) without changing general-use status
• Avoid bulk pharma packaging resembling Chapter 30 exclusions