2934.99.70.00/6R-trans-7-Amino-3-Methyl-8-Oxo-5-Thia-1-Azabicyclo[4.2.0]Oct-2-Ene-2-Carboxylic Acid/Japan
6R-trans-7-Amino-3-Methyl-8-Oxo-5-Thia-1-Azabicyclo[4.2.0]Oct-2-Ene-2-Carboxylic Acid from Japan
This beta-lactam nucleus (6R-trans-7-amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid) is explicitly listed in HTS 2934.99.70.00 as a heterocyclic intermediate for cephalosporin antibiotic synthesis. The bicyclic ring system with sulfur and nitrogen heteroatoms qualifies it as an 'other heterocyclic compound' under heading 2934.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• FDA import alert 99-20 may apply; provide DMF or drug master file for pharmaceutical intermediates
• Include stereochemical confirmation (6R-trans configuration) via chiral HPLC analysis
• Classify as UN 2811 (toxic solid, organic) with appropriate GHS labeling