2-Acetylbenzo(b)thiophene
2-Acetylbenzo(b)thiophene is a chemically defined aromatic heterocyclic compound with a thiophene ring fused to a benzene ring and an acetyl substituent. It is used as an intermediate in pharmaceutical synthesis and falls under tariff item 2934.99.00 as an 'other heterocyclic compound.' Its structure contains sulfur as the heteroatom, consistent with Chapter 29 organo-sulfur compounds.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
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Import Tips & Compliance
• Provide the CAS number (1095-80-9) and a certificate of analysis confirming purity
• Ensure the product is not dissolved in solvents for specific use, per Chapter 29 Note 1(e)
• Verify the absence of added stabilizers that could affect classification
Related Products under Tariff item 2934.99.00
1,9-Thianthrenedicarboxylic acid
1,9-Thianthrenedicarboxylic acid is a polycyclic aromatic heterocyclic compound with sulfur bridges and carboxylic acid groups, classified under tariff item 2934.99.00. Its thianthrene core contains two sulfur atoms in a central ring, making it an 'other heterocyclic compound.' It is used in specialty chemical synthesis and materials science.
2-Acetylbenzo(b)thiophene Technical Grade
Technical-grade 2-acetylbenzo(b)thiophene at 95-98% purity is a chemically defined heterocyclic compound used in scale-up pharmaceutical synthesis. Its thiophene-benzene fused ring system classifies it under tariff item 2934.99.00. The technical grade designation reflects purity levels suitable for industrial applications, not consumer use.
3-Methylene-7-(2-Phenoxyacetamido)-Cephan-4-Carboxylic Acid, p-Nitrobenzyl Ester, 1-Oxide
3-Methylene-7-(2-phenoxyacetamido)-cephan-4-carboxylic acid p-nitrobenzyl ester 1-oxide is a complex beta-lactam derivative with a dihydrothiazine ring, classifying it as a heterocyclic compound under tariff item 2934.99.00. This cephalosporin intermediate is used in antibiotic synthesis and is chemically defined. Its structure contains both sulfur and nitrogen heteroatoms in the ring system.
Bulk Mycophenolate Mofetil API for Generic Production
Bulk mycophenolate mofetil is a chemically defined heterocyclic compound used as an active pharmaceutical ingredient (API) for immunosuppressant medications. It contains a morpholinoethyl ester group linked to a benzofuran ring system, qualifying it as an 'other heterocyclic compound' under tariff item 2934.99.00. Imported in large quantities for generic drug manufacturing, it meets the Chapter 29 criteria for separate chemically defined organic compounds.
GMP Manufactured Mycophenolate Mofetil
GMP-manufactured mycophenolate mofetil is a high-purity, chemically defined heterocyclic compound produced under Good Manufacturing Practice conditions for commercial pharmaceutical use. Its morpholinoethyl ester structure places it within the scope of 'other heterocyclic compounds' under tariff item 2934.99.00. The GMP status does not alter its classification as a bulk organic chemical in Chapter 29.
Mycophenolate Mofetil EP Reference Standard
Mycophenolate mofetil EP reference standard is a highly purified, chemically defined heterocyclic compound used for analytical method validation and quality control in pharmaceutical laboratories. As a reference standard, it retains its identity as a separate organic compound under Chapter 29, falling under tariff item 2934.99.00. It is not formulated for therapeutic use but serves as a calibration material.