Chloramphenicol Acetyl Derivative from Japan
N-acetyl protected intermediate derivative of chloramphenicol used in synthesis of modified antibiotics. Falls under HTS 2941.40.00.00 as chemically defined chloramphenicol derivative. Pharmaceutical intermediate for research and production.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Deprotection stability data needed; acetyl groups hydrolyze above 40°C affecting declared purity
• Declare CAS 1442-35-1 or equivalent; generic 'antibiotic' descriptions trigger CBP review
• Lab synthesis grade requires TSCA notification for US manufacturing import