2934.99.00/3-Methylene-7-(2-Phenoxyacetamido)-Cephan-4-Carboxylic Acid, p-Nitrobenzyl Ester, 1-Oxide/Mexico
3-Methylene-7-(2-Phenoxyacetamido)-Cephan-4-Carboxylic Acid, p-Nitrobenzyl Ester, 1-Oxide from Mexico
3-Methylene-7-(2-phenoxyacetamido)-cephan-4-carboxylic acid p-nitrobenzyl ester 1-oxide, a complex beta-lactam intermediate. This chemically defined heterocyclic compound contains a dihydrothiazine ring and is used in cephalosporin synthesis.
Duty Rate — Mexico → Canada
0%
Import Tips
• This compound is a separate chemically defined heterocyclic compound per Chapter 29 Note 1
• Provide the full structural formula and stereochemistry for customs
• Verify if the product is listed as a controlled precursor