Sebacic Acid Monomethyl Ester from Mexico
Monomethyl sebacate is a half-ester of sebacic acid used in specialty polyester synthesis and pharmaceutical intermediates. Falls under HTS 2917.13.00.90 as an 'other' sebacic acid derivative, qualifying as a chemically defined acyclic polycarboxylic acid ester.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6095.2%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Distinguish from diesters via HPLC certificate; monoester purity critical for 2917 classification
• Pharma intermediate imports require DMF filing or equivalent quality documentation
• Avoid generic 'sebacic derivatives' description; specify exact ester on entry summary