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
13.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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