Barbital (Barbitone) from Mexico
Barbital, the diethyl derivative of barbituric acid, historically used as a sedative. Pure chemical form classified under HTS 2933.54.00.00 as a malonylurea derivative.
Duty Rate — Mexico → United States
3.7%
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
• Commonly imported as reference standard; specify analytical use
• Small quantities typically exempt from some documentation
• Include CAS number (57-44-3) on commercial invoice