CAS 70288-50-1 Methyl 4-Formylphenylacetate from Japan
Identified by CAS number 70288-50-1, this is the pure methyl ester of 4-formylphenylacetic acid matching HTS 2918.30.10.00 exactly. As a separate chemically defined aromatic compound with dual oxygen functions (aldehyde and ester), it fits Chapter 29 subheading for specific named substances. Commonly traded for API synthesis.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Reference CAS 70288-50-1 prominently on invoice and packing list; ensure 4-digit HTS suffix matches for automated entry
• Pre-notify CBP for high-value chemical shipments to avoid exam delays