Other

Alprazolam Base USP

Alprazolam base in USP reference standard form, a triazolobenzodiazepine used to treat anxiety and panic disorders. Its specific nitrogen heterocyclic structure places it under tariff item 2933.91.00 as alprazolam (INN).

Alprazolam Powder

Alprazolam powder is a pharmaceutical-grade benzodiazepine used to treat anxiety and panic disorders. As a chemically defined heterocyclic compound with nitrogen hetero-atoms, it is specifically named under tariff item 2933.91.00. This bulk API is imported for formulation into finished dosage forms.

Chlordiazepoxide HCl API

Chlordiazepoxide hydrochloride, the first benzodiazepine discovered, used for anxiety and alcohol withdrawal. This salt form is classified under tariff item 2933.91.00 as a salt of chlordiazepoxide (INN).

Clonazepam Micronized Powder

Micronized clonazepam powder, a benzodiazepine used in antiepileptic and antipanic formulations. Its particle size enhances bioavailability, but it remains classified under tariff item 2933.91.00 as clonazepam (INN).

Clorazepate Dipotassium Salt

Clorazepate dipotassium salt, a prodrug that hydrolyzes to desmethyldiazepam in the stomach. It is classified under tariff item 2933.91.00 as a salt of clorazepate, a named compound in the item.

Diazepam USP Grade

Diazepam USP grade is a high-purity benzodiazepine used for anxiety, muscle spasms, and seizure control. This chemically defined heterocyclic nitrogen compound is explicitly named in tariff item 2933.91.00. It is imported in bulk as an active pharmaceutical ingredient for further processing.

Diazepam USP Powder

Pharmaceutical grade diazepam powder, a benzodiazepine used for anxiolytic, muscle relaxant, and sedative effects. It is classified under tariff item 2933.91.00 as diazepam (INN), a heterocyclic compound with nitrogen atoms.

Lorazepam API

Lorazepam API is a short-acting benzodiazepine active pharmaceutical ingredient for anxiety treatment. As a pure heterocyclic nitrogen compound, it is specifically named under tariff item 2933.91.00. It is imported in bulk for compounding into tablets and other dosage forms.

Lorazepam API Crystals

High-purity lorazepam API in crystalline form, used in antianxiety medications and anesthesia premedication. It falls under tariff item 2933.91.00 as lorazepam (INN), a 1,4-benzodiazepine derivative.

Lorazepam Base for Research Use

Lorazepam chemical reference standard supplied in small quantities for analytical and research laboratory use. It is classified under tariff item 2933.91.00 as a chemically defined lorazepam meeting Chapter 29 requirements for separate organic compounds.

Lorazepam Sodium Salt

Lorazepam sodium, the sodium salt form of lorazepam, used as an intermediate in injectable pharmaceutical formulations. It falls under tariff item 2933.91.00 per Chapter 29 notes classifying salts of named compounds with the parent compound.

Lorazepam USP Powder

Pure lorazepam active pharmaceutical ingredient (API) in powder form meeting United States Pharmacopeia standards, used in manufacturing anti-anxiety medications. It is classified under tariff item 2933.91.00 as lorazepam (INN).

Lorazepam with Stabilizer Additive

Lorazepam API with added pharmaceutical stabilizer to prevent degradation during transport. It remains classified under tariff item 2933.91.00 as the stabilizer is solely for preservation, not rendering it suitable for a specific use.

Midazolam Hydrochloride

Midazolam hydrochloride is a water-soluble salt of midazolam, a benzodiazepine used for sedation and anesthesia. As a salt of a named INN, it is classified under tariff item 2933.91.00 per Chapter 29 salt classification rules. This API is used in injectable formulations.

Midazolam Hydrochloride Powder

Midazolam hydrochloride powder, a water-soluble salt form for parenteral sedation and anesthesia induction. It is classified under tariff item 2933.91.00 as a salt of midazolam (INN), per Chapter 29 salt classification rules.

Oxazepam Crystals

Oxazepam crystals are a crystalline form of oxazepam, an intermediate-acting benzodiazepine for anxiety. This chemically defined heterocyclic compound is specifically named in tariff item 2933.91.00. The bulk crystals are for pharmaceutical processing into finished products.

Oxazepam Micronized API

Micronized oxazepam active ingredient for antianxiety and alcohol withdrawal treatment. It classifies under tariff item 2933.91.00 as oxazepam (INN), featuring a benzodiazepine-2-one structure.

Pharmaceutical Grade Lorazepam API

High-purity lorazepam active pharmaceutical ingredient certified for human medicinal use, meeting cGMP standards. It is specifically classified under tariff item 2933.91.00 as the named compound lorazepam (INN).

Temazepam Base

Temazepam base is a pure benzodiazepine metabolite used for insomnia treatment. Tariff item 2933.91.00 covers this named INN heterocyclic nitrogen compound in pure form. It is imported for conversion to salts or direct formulation into dosage forms.

Temazepam USP Reference Standard

Certified USP reference standard temazepam for hypnotic treatment of insomnia. It is specifically listed under tariff item 2933.91.00 as temazepam (INN), a 3-hydroxy benzodiazepine with a nitrogen heterocyclic ring system.

Triazolam Pure

Triazolam pure is a high-purity, short-acting benzodiazepine hypnotic for insomnia. It falls under tariff item 2933.91.00 as a specifically named INN compound with a nitrogen heterocyclic structure. This API is used in immediate-release tablet production.

Triazolam Pure Compound

High-purity triazolam for short-term insomnia treatment, the shortest-acting benzodiazepine. It is classified under tariff item 2933.91.00 as triazolam (INN) with a triazolo ring fused to a benzodiazepine core.

Azinphos-methyl 50% Wettable Powder

Azinphos-methyl 50% wettable powder is a formulated insecticide containing the pure active ingredient mixed with inert carriers. It falls under this tariff item because the active ingredient is azinphos-methyl (ISO), a heterocyclic compound with nitrogen hetero-atoms specifically named in the item.

Azinphos-methyl Isomer Mixture 99%

Azinphos-methyl isomer mixture 99% consists of stereoisomers of this nitrogen-heterocyclic compound, explicitly covered under Chapter 29 Note 1(b) as a mixture of isomers of the same organic compound. It is used in research for comparative toxicology studies.

Azinphos-methyl Reference Standard USP

Azinphos-methyl reference standard USP is a certified pure analytical reagent of the heterocyclic compound, classified under this tariff item for laboratory use in pesticide residue analysis. It meets pharmacopeia standards and is used as a calibration standard.

Azinphos-methyl Technical Grade 97%

Azinphos-methyl technical grade 97% is a highly concentrated form of the organophosphate insecticide classified under this tariff item as a specific heterocyclic compound with nitrogen hetero-atoms. It serves as the active ingredient for further formulation into end-use products.

Guthion 2L Azinphos-methyl Liquid

Guthion 2L is a liquid emulsifiable concentrate formulation of azinphos-methyl, a nitrogen-heterocyclic insecticide captured specifically by this tariff item. It is applied via spray for pest control on crops such as almonds and walnuts.

1,3,3-Trimethyl-2-Methyleneindoline

1,3,3-Trimethyl-2-methyleneindoline is an indoline derivative used as a key intermediate in the production of photochromic dyes and other specialty chemicals. As a heterocyclic compound with a nitrogen hetero-atom, it is classified under tariff item 2933.99.00.

1-Methylindole

1-Methylindole is a modified aromatic indole derivative with a methyl group at the nitrogen position, classified as a separate chemically defined organic compound with a nitrogen hetero-atom only. It falls under heading 29.33 as an 'other' heterocyclic compound. This compound is commonly used in organic synthesis for pharmaceutical and chemical applications.

2-Methylindole

2-Methylindole is a simple alkyl-substituted indole with methylation at position 2, classified as a separate chemically defined organic compound with a nitrogen hetero-atom only. It falls under heading 29.33 as an 'other' heterocyclic compound. This compound is used in perfume synthesis and as a pharmaceutical intermediate.

3-Acetylindole

3-Acetylindole contains a ketone functionality at position 3 of the indole structure, classified as a separate chemically defined organic compound with a nitrogen hetero-atom only. It falls under heading 29.33 as an 'other' heterocyclic compound, with the heterocycle taking precedence over the ketone classification. This compound is an important intermediate for alkaloid synthesis.

3-Aminocarbazole

3-Aminocarbazole is a carbazole derivative with an amino group substitution, maintaining the core heterocyclic nitrogen structure. It is used as an intermediate in pharmaceutical and dye synthesis and is classified under tariff item 2933.99.00.

4-Carbazoleboronic Acid

4-Carbazoleboronic acid retains the core carbazole heterocyclic structure with a boronic acid substitution. It is used as an intermediate in organic synthesis and is classified under tariff item 2933.99.00 as an organo-inorganic compound.

5-Methoxyindole

5-Methoxyindole contains a methoxy substitution on the benzene ring of indole, classified as a separate chemically defined organic compound with a nitrogen hetero-atom only. It falls under heading 29.33 as an 'other' heterocyclic compound. This compound is a key intermediate for melatonin synthesis.

6-Chloro-2-(4-Hydroxyphenoxy)quinoxaline Ethyl Propionate

6-Chloro-2-(4-Hydroxyphenoxy)quinoxaline Ethyl Propionate is a synonym for quizalofop-P-ethyl, a specific ethyl ester of a propionic acid derivative with a quinoxaline core. It is a separate chemically defined organic compound with nitrogen hetero-atoms only, classified under heading 29.33. This compound is used as a herbicide active ingredient.

6-Fluoroindole

6-Fluoroindole is a halogenated indole derivative with fluorine at position 6, classified as a separate chemically defined organic compound with a nitrogen hetero-atom only. It falls under heading 29.33 as an 'other' heterocyclic compound. The halogen does not trigger separate classification per Chapter 29 notes. This compound is used in pharmaceutical synthesis.

9-Aminoacridine

9-Aminoacridine is an acridine derivative with an amino group at position 9, classified as a separate chemically defined organic compound with a nitrogen hetero-atom only. It falls under heading 29.33 as an 'other' heterocyclic compound, despite the additional nitrogen functionality. This compound is used in pharmaceutical intermediates.

9H-Carbazole Flakes

9H-Carbazole flakes are the standard commercial presentation of this aromatic heterocyclic compound. It is used extensively in the production of carbazole violet pigments and pharmaceuticals and is classified under tariff item 2933.99.00.

Acetoacetyl-5-Amino Benzimidazolone

Acetoacetyl-5-amino benzimidazolone is an aromatic heterocyclic compound used as an intermediate in the synthesis of azo pigments and dyes. Its benzimidazolone ring contains nitrogen hetero-atoms, placing it under tariff item 2933.99.00.

Acridine

Acridine is a tricyclic aromatic heterocyclic compound containing a nitrogen hetero-atom in its central ring. It is classified under tariff item 2933.99.00 as a heterocyclic compound with nitrogen hetero-atom(s) only, since its structure is not more specifically covered elsewhere in Chapter 29. Acridine serves as a fundamental building block in the synthesis of dyes, pharmaceuticals, and other organic chemicals.

Acridine Orange Base

Acridine Orange Base is a dialkylamino-substituted acridine derivative used as a precursor in the synthesis of fluorescent dyes. It is classified under tariff item 2933.99.00 as a heterocyclic compound with nitrogen hetero-atom(s) only, based on its acridine core structure. The free base form is distinct from its hydrochloride salt, which would be classified separately.

Butyl (R)-2-[4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy]propanoate

Butyl (R)-2-[4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy]propanoate is a chiral heterocyclic compound containing a pyridine ring with a trifluoromethyl substituent and an aryloxypropanoate ester group. It is a separate chemically defined organic compound with a nitrogen hetero-atom only, falling under heading 29.33 as an 'other' heterocyclic compound. This substance is used as an intermediate or active ingredient in herbicide formulations.

Carbazole Powder

Carbazole powder is a tricyclic aromatic heterocyclic compound with nitrogen hetero-atoms, appearing as white to pale yellow flakes or powder. It is used in the production of dyes, pharmaceuticals, and other specialty chemicals and is classified under tariff item 2933.99.00.

Ethyl (R)-Quizalofop Technical Grade

Ethyl (R)-Quizalofop technical grade is the R-enantiomer of 2-[4-[(6-chloroquinoxalin-2-yl)oxy]phenoxy]propanoic acid ethyl ester, a high-purity chiral herbicide active ingredient. It is a separate chemically defined organic compound with nitrogen hetero-atoms only, falling under heading 29.33. This product is used in herbicide formulations for grass weed control.

Fenbuconazole Process Intermediate

Fenbuconazole Process Intermediate is a chemical intermediate in the multi-step synthesis of the fungicide fenbuconazole, specifically 1H-1,2,4-triazole-1-propanenitrile. It is classified under tariff item 2933.99.00 as a heterocyclic compound with nitrogen hetero-atom(s) only. This pure compound is imported for final formulation stages in fungicide production.

Fenbuconazole Pure Active Ingredient

Fenbuconazole Pure Active Ingredient is the chemically defined fungicide α-[2-(4-Chlorophenyl)ethyl]-α-phenyl-1H-1,2,4-triazole-1-propanenitrile. It is classified under tariff item 2933.99.00 as a specific nitrogen-heterocyclic compound. This pure form is used as the technical active ingredient in fungicide formulations.

Fenbuconazole Stabilized Crystals

Fenbuconazole Stabilized Crystals contain the active ingredient fenbuconazole with anti-caking agents added for preservation and transport. It is classified under tariff item 2933.99.00 as the additions are permitted under Chapter 29 Note 1(f). This stabilized form prevents clumping during transport and storage.

Fluazifop-P-butyl Active Ingredient

Fluazifop-P-butyl is the (R)-enantiomer of butyl 2-[4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy]propanoate, a post-emergence herbicide for grass weed control. It is a separate chemically defined organic compound with a pyridine ring and nitrogen hetero-atom only, classified under heading 29.33. This active ingredient is used in agricultural herbicide formulations.

Haloxyfop-P-butyl Technical Grade

Haloxyfop-P-butyl technical grade is the (R)-enantiomer of butyl 2-[4-(5-trifluoromethyl-2-pyridinyloxy)phenoxy]propanoate, a selective graminicide active ingredient. It is a separate chemically defined organic compound with a nitrogen hetero-atom only, falling under heading 29.33. This technical grade product is used in the formulation of herbicides for grass weed control.

Indole

Indole is a bicyclic aromatic heterocyclic compound consisting of a benzene ring fused to a pyrrole ring, with a nitrogen hetero-atom. It is classified under tariff item 2933.99.00 as a heterocyclic compound with nitrogen hetero-atom(s) only. Indole is widely used as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and fragrances.

Indole-3-Acetic Acid

Indole-3-Acetic Acid is a plant growth regulator (auxin) featuring a carboxylic acid functional group attached to the indole core. It is classified under tariff item 2933.99.00 because the heterocyclic indole structure takes precedence over the carboxylic acid function. This compound is used in horticulture and plant tissue culture applications.

Indole-3-Butyric Acid

Indole-3-Butyric Acid is a synthetic auxin with a four-carbon carboxylic acid chain attached to the indole ring. It is classified under tariff item 2933.99.00 as the heterocyclic indole structure takes precedence over the carboxylic acid function. This compound is widely used as a rooting hormone in plant propagation.

Indole-3-Carboxaldehyde

Indole-3-Carboxaldehyde features an aldehyde functional group at position 3 of the indole ring. It is classified under tariff item 2933.99.00 because the named heterocyclic compound takes precedence over the aldehyde function. This compound is used as an intermediate in the synthesis of pharmaceuticals and other fine chemicals.

Indole-3-Methanol

Indole-3-Methanol, also known as indole-3-carbinol, features a hydroxymethyl group attached to the indole ring. It is classified under tariff item 2933.99.00 as the heterocyclic structure takes precedence over the alcohol function. This compound is used in alkaloid total synthesis and as a dietary supplement precursor.

Indole-3-Propionic Acid

Indole-3-Propionic Acid features a three-carbon carboxylic acid chain attached to the indole ring. It is classified under tariff item 2933.99.00 because the indole heterocyclic structure takes precedence over the carboxylic acid function. This compound is used as a neurotransmitter precursor and antioxidant in research applications.

Lowilite 27 UV Absorber C7-C9 Esters

Lowilite 27 UV absorber consists of C7-C9 esters of 3-(2H-benzotriazol-2-yl)-5-(tert-butyl)-4-hydroxybenzene propanoic acid. This benzotriazole derivative protects polyolefins and engineering plastics from UV degradation and is classified under tariff item 2933.99.00 as a nitrogen heterocycle.

Myclobutanil 95% Technical Powder

Myclobutanil 95% Technical Powder is the chemically defined fungicide α-Butyl-α-(4-chlorophenyl)-1H-1,2,4-triazole-1-propanenitrile with minor stabilizers. It is classified under tariff item 2933.99.00 as a heterocyclic compound with nitrogen hetero-atom(s) only. The 95% purity with minor stabilizers is permitted under Chapter 29 Note 1(f).

Myclobutanil Reference Standard

Myclobutanil Reference Standard is a high-purity (>99%) analytical standard of α-Butyl-α-(4-chlorophenyl)-1H-1,2,4-triazole-1-propanenitrile. It is classified under tariff item 2933.99.00 as a chemically defined heterocyclic compound. This reference standard is used for analytical laboratory testing and quality control.

Myclobutanil Technical Grade Fungicide

Myclobutanil Technical Grade Fungicide is the chemically defined aromatic heterocyclic compound α-Butyl-α-(4-chlorophenyl)-1H-1,2,4-triazole-1-propanenitrile. It is classified under tariff item 2933.99.00 as a pure nitrogen-heterocyclic compound. This technical grade product is used as the active ingredient in fungicide formulations.