Cinchonidine from Mexico
Cinchonidine free base is the native alkaloid from cinchona bark, used as chiral catalyst precursor. HTS 2939.20.0050 covers this as other non-salt cinchona alkaloid. Oil-soluble form for asymmetric synthesis.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Provide specific rotation [-100° to -115°] confirming natural origin
• GC-MS confirmation of quinuclidine ring system
• Stability data under inert atmosphere storage