Cinchonine Base from Mexico
Cinchonine free base alkaloid from cinchona used in stereoselective synthesis and alkaloid research. Classified HTS 2939.20.0050 as other cinchona alkaloid. Research chemical grade.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Melting point 263-264°C confirmation
• NMR verification of methoxyquinoline moiety
• Declare research vs commercial intent