Nucleic acids, nucleosides, nucleotides, and their salts, excluding synthetic nucleotide sequences (oligonudeotides) and their salts
Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds. > Other: > Other fentanyls and their derivatives > Other > Nucleic acids, nucleosides, nucleotides, and their salts, excluding synthetic nucleotide sequences (oligonudeotides) and their salts
Duty Rate (from China)
Products classified under Tariff item 2934.99.00.10
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.
2934.99.002-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.
2934.99.002-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.
2934.99.003-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.
2934.99.00Bulk 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.
2934.99.00GMP 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.
2934.99.00Mycophenolate 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.
2934.99.00Mycophenolate Mofetil Free Base Powder
Mycophenolate mofetil free base powder is a pure, chemically defined heterocyclic compound in pharmaceutical-grade form, serving as the active ingredient for generic immunosuppressant production. Its morpholinoethyl ester structure and benzofuran ring classify it under 'other heterocyclic compounds' in tariff item 2934.99.00. The free base form is the unmodified API, distinct from salt derivatives.
2934.99.00Mycophenolate Mofetil Hydrochloride
Mycophenolate mofetil hydrochloride is the hydrochloride salt of mycophenolate mofetil, a semi-synthetic immunosuppressant with a morpholinoethyl ester group. As a salt of a heterocyclic compound, it is classified under tariff item 2934.99.00 per Chapter 29 Note 5(C), which directs inorganic salts of organic compounds to the heading of the parent compound. The salt form enhances solubility for pharmaceutical applications.
2934.99.00Mycophenolate Mofetil Morpholino Ester
Mycophenolate mofetil morpholino ester is the specific prodrug form of mycophenolic acid, chemically defined as a heterocyclic compound with a morpholinoethyl ester group. It converts in vivo to the active mycophenolic acid and is classified under tariff item 2934.99.00 as an 'other heterocyclic compound.' The ester structure is integral to its function as an immunosuppressant API.
2934.99.00Mycophenolate Mofetil Working Standard
Mycophenolate mofetil working standard is a certified reference material used for routine HPLC assay calibration and stability testing in pharmaceutical quality control. As a pure, chemically defined heterocyclic compound, it falls under tariff item 2934.99.00. Working standards are not for therapeutic use but serve as analytical tools in regulated laboratories.
2934.99.00Naphth[1,2-d]-[1,2,3]-Oxadiazole-5-Sulfonic Acid
Naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonic acid is a fused heterocyclic compound with an oxadiazole ring attached to a naphthalene system and a sulfonic acid substituent. It falls under tariff item 2934.99.00 as an 'other heterocyclic compound.' This aromatic compound is used in dye and pigment synthesis, with its sulfonic acid group enhancing water solubility.
2934.99.00Naphth[1,2-d]-[1,2,3]-Oxadiazole-5-Sulfonic Acid Sodium Salt
Sodium naphth[1,2-d]-[1,2,3]-oxadiazole-5-sulfonate is the sodium salt of the corresponding sulfonic acid, maintaining the aromatic heterocyclic structure under tariff item 2934.99.00. The salt form offers enhanced water solubility for dye applications. Per Chapter 29 Note 5(C), inorganic salts of organic compounds are classified with the parent compound.
2934.99.00Pharmaceutical Grade Mycophenolate Mofetil USP
Pharmaceutical-grade mycophenolate mofetil meeting USP standards is a high-purity heterocyclic compound used in FDA-approved generic drug manufacturing. Its chemically defined structure with a morpholinoethyl ester group classifies it under tariff item 2934.99.00. USP compliance confirms its suitability for pharmaceutical applications without altering its Chapter 29 classification.
2934.99.00Sterile Mycophenolate Mofetil for Injection Formulation
Sterile mycophenolate mofetil powder for injection formulation is a bulk heterocyclic API processed under sterile conditions for subsequent IV drug production. Sterilization does not alter its chemical identity as a separate defined compound, so it remains under tariff item 2934.99.00. The product is not in measured doses and requires further processing before therapeutic use.