Ethyl 2-keto-4-phenylbutanoate (98% purity, pharma grade) from Mexico
High-purity version of the named compound under HTS 2918.30.1500, supplied as a pale yellow oil for pharmaceutical intermediate applications. Its aromatic ketone-acid ester structure fits chapter notes for classification in the last occurring heading for such oxygen functions.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Use tamper-evident packaging with nitrogen blanketing to maintain stability during ocean freight
• Pre-notify CBP of imminent arrival with exact chemical name to expedite release from exam