Pethidine Intermediate A (NOR) from China
Pethidine Intermediate A, chemically 1-methyl-4-phenylpiperidine-4-carboxylic acid ethyl ester, is a key synthetic precursor to the opium alkaloid derivative meperidine (pethidine). It is classified under HTS 2939.19.20.00 as a synthetic derivative structurally related to opium alkaloids. Used exclusively in controlled pharmaceutical synthesis.
Duty Rate — China → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• List of Narcotic Intermediates requires specific DEA Form 333; general alkaloid permits insufficient
• Prove downstream manufacturing location to avoid diversion concerns
• Maintain chain-of-custody documentation from origin to destination