Chapter 2934 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 29.34
2,4-Thiazolidinedione
2,4-Thiazolidinedione is the core structure for glitazone antidiabetic drugs such as pioglitazone, featuring a saturated thiazolidine ring (hydrogenated thiazole). Its unfused thiazole ring, whether or not hydrogenated, is the basis for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for pharmaceutical synthesis.
2934.10.002-Acetylamino-5-nitrothiazole
2-Acetylamino-5-nitrothiazole is a nitro-substituted thiazole compound used as an intermediate in veterinary pharmaceutical synthesis. The unfused thiazole ring in its structure is the basis for classification under tariff item 2934.10.00. It is a chemically defined organic compound imported in bulk for industrial processing.
2934.10.002-Aminothiazole
2-Aminothiazole is an aromatic heterocyclic compound with an unfused thiazole ring and an amino group at the 2-position. It is used primarily as a pharmaceutical intermediate. The structure directly matches tariff item 2934.10.00.
2934.10.002-Aminothiazole-4-Acetic Acid
2-Aminothiazole-4-acetic acid is a thiazole derivative featuring an amino group and an acetic acid moiety on the aromatic ring. It is a key intermediate in the synthesis of cephalosporin antibiotics, and its structure contains an unfused thiazole ring, qualifying it under tariff item 2934.10.00.
2934.10.002-Mercaptothiazoline
2-Mercaptothiazoline features a hydrogenated thiazole ring (thiazoline) with a mercapto group. It is used in rubber vulcanization. The hydrogenated thiazole ring is covered by tariff item 2934.10.00, which includes 'whether or not hydrogenated'.
2934.10.002-Methyl-4-Amino-5-Hydroxymethylpyrimidine Thiazole Intermediate
2-Methyl-4-amino-5-hydroxymethylpyrimidine thiazole intermediate is a key intermediate for thiamine synthesis. It contains an unfused thiazole ring and is used exclusively in pharmaceutical chemical manufacturing. The structure matches the description of tariff item 2934.10.00.
2934.10.002-Methyl-4-isothiazolin-3-one (MIT)
2-Methyl-4-isothiazolin-3-one (MIT) is a methyl-substituted isothiazolinone used as a preservative in cosmetics, water treatment, and household products. Its unfused thiazole ring structure is the basis for classification under tariff item 2934.10.00. This chemically defined heterocyclic compound is imported in bulk for formulation into finished products.
2934.10.002-n-Octyl-4-isothiazolin-3-one (OIT)
2-n-Octyl-4-isothiazolin-3-one (OIT) is an isothiazolinone biocide with an n-octyl substituent, used as an antimicrobial agent in paints, coatings, and wood preservatives. Its unfused thiazole ring qualifies it for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for industrial formulation.
2934.10.004,5-Dichloro-2-n-octyl-4-isothiazolin-3-one
4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one is a chlorinated isothiazolinone compound used as a broad-spectrum biocide in industrial applications. Its unfused thiazole ring structure is the basis for classification under tariff item 2934.10.00. This chemically defined heterocyclic compound is imported in bulk for use in coatings and preservatives.
2934.10.004-Methylthiazole
4-Methylthiazole is a simple aromatic thiazole ring with a methyl substituent at the 4-position. It is used in flavor synthesis and pharmaceuticals. The unfused thiazole ring qualifies it under tariff item 2934.10.00.
2934.10.004-Methylthiazole Pharmaceutical Grade
4-Methylthiazole is an aromatic heterocyclic compound with an unfused thiazole ring and a methyl substituent at the 4-position. It is used as a building block in pharmaceutical API synthesis and flavor chemistry, and its structure directly matches the description of tariff item 2934.10.00.
2934.10.004-Phenylthiazole
4-Phenylthiazole consists of an aromatic thiazole ring with a phenyl substituent at position 4. It is used in materials science and pharmaceuticals. The unfused thiazole ring is the core structure, qualifying it under tariff item 2934.10.00.
2934.10.005-(2-Aminoethyl)-4-methylthiazole
5-(2-Aminoethyl)-4-methylthiazole is an intermediate in thiamine synthesis featuring a substituted aromatic thiazole ring with an aminoethyl side chain. It is chemically defined and contains an unfused thiazole ring, qualifying it under tariff item 2934.10.00.
2934.10.005-Methyl-2-Furfurylthiazolium Chloride
5-Methyl-2-Furfurylthiazolium Chloride is a thiazolium salt used in asymmetric catalysis, featuring a substituted thiazole ring with a furfuryl group. Its unfused thiazole ring structure is the basis for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for research and industrial applications.
2934.10.00Ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate is a hydroxyimino derivative of an aminothiazole intermediate used in the synthesis of beta-lactam antibiotics. Its unfused thiazole ring is the key structural feature for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for pharmaceutical manufacturing.
2934.10.00Ethyl 2-(2-aminothiazol-4-yl)-2-methoxyiminoacetate
Ethyl 2-(2-aminothiazol-4-yl)-2-methoxyiminoacetate is a key pharmaceutical intermediate used in the synthesis of third-generation cephalosporin antibiotics such as cefotaxime. Its unfused thiazole ring structure qualifies it for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for drug manufacturing.
2934.10.00Famotidine
Famotidine is an H2-receptor antagonist containing a thiazole ring linked to guanidine and imidazole moieties. It is used in medications for acid reflux. The unfused thiazole ring is a key structural feature, placing it under tariff item 2934.10.00.
2934.10.00Famotidine Active Pharmaceutical Ingredient
Famotidine is an active pharmaceutical ingredient containing an unfused thiazole ring in its structure. It is an H2-receptor antagonist used in medications for acid reflux and ulcers. The thiazole ring is a key structural feature, placing it under tariff item 2934.10.00.
2934.10.00Nitroscanate
Nitroscanate is an anthelmintic veterinary drug containing a 4-nitrothiazole ring structure. Its unfused thiazole ring is the basis for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for veterinary pharmaceutical manufacturing.
2934.10.00Ritodrine Hydrochloride
Ritodrine hydrochloride is a tocolytic agent used in pharmaceutical preparations to manage preterm labor. Its molecular structure contains an unfused thiazole ring, which places it under tariff item 2934.10.00 for heterocyclic compounds with such rings. This chemically defined organic compound is imported in bulk for further processing into finished dosage forms.
2934.10.00Sulfathiazole Sodium Salt
Sulfathiazole sodium salt is a sulfonamide antibiotic with an aromatic thiazole ring. It is used in veterinary pharmaceutical applications. The sodium salt form is classified with the organic compound, and the unfused thiazole ring qualifies it under tariff item 2934.10.00.
2934.10.00Thiamine Hydrochloride Powder
Thiamine hydrochloride is the chloride salt of vitamin B1, featuring an aromatic thiazole ring. It is used in pharmaceutical manufacturing and animal feed fortification. The thiazole ring is unfused, and the salt is classified with the organic compound under tariff item 2934.10.00.
2934.10.00Thiamine Hydrochloride (Vitamin B1)
Thiamine hydrochloride contains a substituted pyrimidine-thiazolium structure with an unfused aromatic thiazole ring. It is classified as a vitamin but tariffed as its heterocyclic component. The thiazole ring qualifies it under tariff item 2934.10.00.
2934.10.00Thiamine Mononitrate USP
Thiamine mononitrate is a synthetic form of vitamin B1 containing an unfused thiazole ring. It is used in pharmaceutical and nutritional applications. The nitrate salt is classified with the organic compound, and the thiazole ring structure places it under tariff item 2934.10.00.
2934.10.00Thiazole-4-Carboxylic Acid
Thiazole-4-carboxylic acid is an aromatic thiazole compound with a carboxylic acid functional group at the 4-position, used as a building block in pharmaceutical synthesis. Its unfused thiazole ring is the key structural feature for classification under tariff item 2934.10.00. This chemically defined compound is imported in bulk for further chemical reactions.
2934.10.00Thiazole-4-Carboxylic Acid Ethyl Ester
Thiazole-4-carboxylic acid ethyl ester is an aromatic thiazole derivative with an ester functional group. It serves as an intermediate in pharmaceutical and agrochemical synthesis. The unfused thiazole ring is the core structure, qualifying it under tariff item 2934.10.00.
2934.10.00Thiothiamine Hydrochloride
Thiothiamine hydrochloride is a thiazole-containing derivative of vitamin B1, used in nutritional supplements and pharmaceutical formulations as a thiamine analog. Its unfused thiazole ring structure is the basis for classification under tariff item 2934.10.00. This chemically defined heterocyclic salt is imported in bulk for further processing.
2934.20.002,2'-Dithiobisbenzothiazole (DMTS)
2,2'-Dithiobisbenzothiazole (DMTS) is a sulfur-containing heterocyclic compound featuring a benzothiazole ring system. It is a separate chemically defined compound used as a rubber accelerator.
2934.20.002-(4-Amino Phenyl)-6-Methyl Benzothiazole-7-Sulfonic Acid
2-(4-Amino Phenyl)-6-Methyl Benzothiazole-7-Sulfonic Acid is a sulfonated benzothiazole derivative. It contains amino phenyl substitution and sulfonic acid functionality. Used in azo dye coupling and pharmaceutical intermediates.
2934.20.002-Amino-5,6-Dichloro Benzothiazole
2-Amino-5,6-Dichloro Benzothiazole is a chemically defined heterocyclic compound. It contains a benzothiazole ring with amino and dichloro substitutions. Used in high-temperature applications.
2934.20.002-Amino-5,6-Dichloro Benzothiazole Technical Grade 98%
Technical grade 2-amino-5,6-dichloro benzothiazole with 98% purity. Contains a stabilizer for transport, permitted under Chapter 29 note (f). Used in high-temperature rubber and polymer applications.
2934.20.002-Amino-6-methoxybenzothiazole
2-Amino-6-methoxybenzothiazole is a benzothiazole derivative with amino at position 2 and methoxy at position 6. It is a chemically defined heterocyclic compound. Used as an intermediate in pharmaceutical synthesis.
2934.20.002-Amino-6-methylbenzothiazole
2-Amino-6-methylbenzothiazole is a chemically defined organic compound featuring the benzothiazole ring system, with an amino group at position 2 and a methyl group at position 6. It is primarily used as an intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals. As a separate chemically defined compound containing a benzothiazole ring-system, it is classified under tariff item 2934.20.00.
2934.20.002-Amino-6-Nitro Benzothiazole
2-Amino-6-Nitro Benzothiazole is a nitro-substituted benzothiazole with an amino group at position 2. It is a chemically defined compound. Used as a photographic chemical intermediate and in rubber accelerator synthesis.
2934.20.002-Amino-6-Nitro Benzothiazole Photographic Grade
Photographic grade 2-amino-6-nitro benzothiazole with >99.5% purity. Contains an anti-dusting agent, permitted under Chapter 29 note (g). Optimized for silver halide emulsion sensitization.
2934.20.002-Benzothiazolethiol Sodium Salt Flakes
Sodium 2-mercaptobenzothiazole in flake form is a rubber accelerator precursor. It contains the benzothiazole ring system and is a chemically defined compound. Used primarily in the production of MBTS.
2934.20.002-Benzothiazolethiol Sodium Salt Solution 50%
A 50% aqueous solution of sodium 2-mercaptobenzothiazole. The water is added solely for safe transport, as permitted by Chapter 29 note (d). It remains classified as the pure compound under this tariff item.
2934.20.002-Mercaptobenzothiazole Industrial Grade 98%
High-purity industrial grade 2-Mercaptobenzothiazole at 98% minimum assay, qualifying as a chemically defined compound under this tariff item. Used in tire manufacturing and rubber belt production for optimal cross-linking.
2934.20.002-Mercaptobenzothiazole (MBT) Powder
2-Mercaptobenzothiazole (MBT) is a heterocyclic compound containing a benzothiazole ring system, primarily used as an accelerator in rubber vulcanization processes. It is a separate chemically defined compound.
2934.20.002-(Thiocyanomethylthio)benzothiazole Bactericide
2-(Thiocyanomethylthio)benzothiazole is a benzothiazole derivative with a thiocyanomethylthio side chain, used as a bactericide and fungicide in industrial water treatment and crop protection. It contains the required benzothiazole ring-system and is a separate chemically defined compound. This product is classified under tariff item 2934.20.00.
2934.20.003-Methylbenzothiazole-2-hydrazone
3-Methylbenzothiazole-2-hydrazone is a benzothiazole derivative with a methyl group on the nitrogen and a hydrazone group at position 2. It is used as an intermediate in the production of pharmaceuticals and fine chemicals. As a separate chemically defined compound containing the benzothiazole ring-system, it falls under tariff item 2934.20.00.
2934.20.006-Ethoxy-2-benzothiazolethiol
6-Ethoxy-2-benzothiazolethiol is a benzothiazole derivative with an ethoxy group at position 6 and a thiol group at position 2. It is used in the synthesis of vulcanization accelerators and other rubber chemicals. As a separate chemically defined compound containing the benzothiazole ring-system, it is classified under tariff item 2934.20.00.
2934.20.00Benzothiazole-2-Thiol Fungicide
Benzothiazole-2-thiol, also known as 2-mercaptobenzothiazole, is a heterocyclic compound used as a fungicide and vulcanization accelerator. Its core benzothiazole ring-system qualifies it as a benzothiazole derivative. As a separate chemically defined compound, it is classified under tariff item 2934.20.00.
2934.20.00Benzothiazole Disulfide Powder 98%
Technical grade 98% 2,2'-dithiobisbenzothiazole powder for large-scale rubber processing plants. It is a chemically defined benzothiazole structure with allowable impurities, classified as a heterocyclic compound.
2934.20.00Benzothiazole TBBS 95% Technical Grade
Technical grade N-tert-Butyl-2-benzothiazolesulfenamide (TBBS) at 95% purity, a chemically defined heterocyclic compound containing an unfused benzothiazole ring-system. It is used as a vulcanization accelerator in rubber formulations for footwear soles and other industrial rubber goods.
2934.20.00Benzothiazolone Mycobacteiricide
Benzothiazolone, specifically 3-methylbenzothiazol-2-one, is a benzothiazole derivative used as a mycobactericide in aquaculture and agriculture. It features the lactam-fused ring system and is a separate chemically defined compound. This product is classified under tariff item 2934.20.00 as a benzothiazole ring-system compound.
2934.20.00Captax MBTS Rubber Accelerator
Captax MBTS is the commercial grade 2,2'-dithiobisbenzothiazole used in tire and rubber manufacturing as a delayed-action vulcanization accelerator. It contains the specific benzothiazole ring-system required for this tariff item.
2934.20.00CBS Benzothiazole Sulfenamide Accelerator
CBS (CZ) is N-Cyclohexyl-2-benzothiazole sulfenamide, chemically related to named NOBS via benzothiazole structure. Provides excellent processing safety for automotive rubber components.
2934.20.00Chlorobenzothiazole Herbicide
2-Chlorobenzothiazole is a benzothiazole derivative with a chlorine atom at position 2, used as a herbicide and plant growth regulator. It contains the defining benzothiazole ring-system and is a separate chemically defined compound. This product is classified under tariff item 2934.20.00.
2934.20.00High-Purity 2-Mercaptobenzothiazole Sodium Salt
High-purity sodium 2-mercaptobenzothiazole (99+%) is a lab-grade reagent. It is a chemically defined heterocyclic compound with an unfused benzothiazole ring. Used in pharmaceutical and chemical research.
2934.20.00MBTS Dibenzothiazole Disulfide
MBTS, derived from 2-Mercaptobenzothiazole, contains two benzothiazole rings linked by a disulfide bond, qualifying under this tariff item. It is a slow-curing accelerator used in EPDM rubber formulations.
2934.20.00MBTS Sodium Salt Technical Grade
Technical-grade sodium 2-mercaptobenzothiazole (98% purity) is a precursor to MBTS. It contains the benzothiazole ring with mercapto functionality. Used in rubber accelerator production.
2934.20.00Methoxybenzothiazole Insecticide Intermediate
5-Methoxybenzothiazole is a benzothiazole derivative with a methoxy group at position 5, used as a pesticide active ingredient and intermediate in neonicotinoid synthesis. It contains the characteristic benzothiazole ring-system and is a separate chemically defined compound. This product is classified under tariff item 2934.20.00.
2934.20.00N,N-Dicyclohexyl-2-Benzothiazole Sulfenamide (DCBS)
DCBS is a vulcanization accelerator containing dicyclohexylamine attached to a benzothiazole sulfenamide. It is used in delayed-action rubber curing systems for tire manufacturing. The benzothiazole ring system qualifies it for this item.
2934.20.00NOBS-60 Pre-Dispersed MBTS Accelerator
NOBS-60 is a 60% dispersion of 2,2'-dithiobisbenzothiazole on a polymer carrier for even distribution in rubber mixes. Despite the dispersion, the active ingredient's benzothiazole structure qualifies it under this tariff item, provided the carrier does not render it particularly suitable for specific use.
2934.20.00NOBS MBS Rubber Accelerator 95% Powder
MBS (MOR) is 2-(Morpholinothio)benzothiazole, a sulfenamide accelerator analogous to named NOBS. Provides balanced cure rate and scorch resistance for conveyor belts.
2934.20.00N-(Oxydiethylene)benzothiazole-2-sulfenamide (NOBS) Crystals
NOBS is a delayed-action sulfenamide accelerator used in rubber vulcanization. Its structure contains the benzothiazole ring system, which qualifies it for this tariff item. It provides scorch safety and fast curing in rubber compounds.
2934.20.00N-tert-Butyl-2-benzothiazolesulfenamide (TBBS)
N-tert-Butyl-2-benzothiazolesulfenamide (TBBS) is a sulfenamide accelerator with a benzothiazole ring-system, not further fused. It is a separate chemically defined organic compound used primarily in rubber vulcanization processes.
2934.20.00Primuline Base
Primuline base is a chemically defined aromatic amine derivative of benzothiazole, used as an intermediate in the production of primuline direct dyes. It contains the unfused benzothiazole ring-system and is a separate organic compound. This product is classified under tariff item 2934.20.00 as a benzothiazole ring-system compound.
2934.20.00Runflex TBBS Vulcanization Accelerator
Runflex TBBS is N-tert-Butyl-2-benzothiazolesulfenamide meeting industrial specifications for rubber curing. It contains the characteristic benzothiazole ring-system and is classified as a heterocyclic compound not further fused.