4-Methylthiazole
4-Methylthiazole is a simple alkyl-substituted thiazole used in flavor and fragrance applications and as a pharmaceutical intermediate. Classified under HTS 2934.10.90.00 as an 'other' unfused thiazole ring compound meeting Chapter 29 requirements for chemically defined heterocycles. The methyl substitution does not alter its primary thiazole classification.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If breath mints or medicinal lozenges containing thiazole for flavor
Heterocyclic compounds in consumer dosage forms may classify under 2932 if pharmaceutical presentation dominates over chemical identity.
If imported as food flavoring mixture exceeding 50% thiazole content
Mixtures of odoriferous substances for food use classify in Chapter 33 rather than pure Chapter 29 compounds.
If diluted in solvent for safe transport exceeding Chapter 29 solvent note limits
Preparations with solvents rendering them suitable for specific uses fall under heading 3824.
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Import Tips & Compliance
• Declare intended use (flavor vs pharmaceutical) on entry documents as this affects potential FDA oversight
• Provide GC-MS analysis verifying structure and isomer purity to distinguish from 2- or 5-methylthiazole isomers
• Ship in amber glass bottles to prevent light-induced degradation, with COA included in shipment
Related Products under HTS 2934.10.90.00
2-Aminothiazole
2-Aminothiazole is a heterocyclic compound containing an unfused thiazole ring with an amino group at the 2-position, used primarily as an intermediate in pharmaceutical synthesis. It falls under HTS 2934.10.90.00 as a thiazole ring compound that is chemically defined but not specifically enumerated elsewhere in the subheading. This classification aligns with Chapter 29 notes for separate chemically defined organic compounds containing thiazole structures.
Thiamine Hydrochloride (Vitamin B1)
Thiamine hydrochloride contains a substituted pyrimidine-thiazolium structure with an unfused thiazole ring, classified as a vitamin but chemically under thiazole compounds in HTS 2934.10.90.00. This subheading captures complex thiazoles used primarily as pharmaceuticals, consistent with Chapter 29's precedence for heterocyclic classification.
2-Mercaptothiazoline
2-Mercaptothiazoline (2-thiazoline-2-thiol) features an unfused thiazole ring with a thiol substituent, used in rubber vulcanization and photography. Falls under HTS 2934.10.90.00 as an 'other' thiazole compound per Chapter 29 definitions for organo-sulfur heterocycles not covered by heading 2930.
Ritodrine Hydrochloride
Ritodrine hydrochloride is a beta-adrenergic agonist containing an unfused thiazole ring, used as a tocolytic agent to prevent premature labor. Classified under HTS 2934.10.90.00 as a thiazole heterocyclic pharmaceutical intermediate or bulk active. The thiazole structure determines classification per Chapter 29 heading precedence rules.
Famotidine
Famotidine, an H2-receptor antagonist for acid reduction, contains a thiazole ring linked to guanidine functionality. Bulk active pharmaceutical ingredient classifies under HTS 2934.10.90.00 due to predominant unfused thiazole heterocyclic structure. Used in medications like Pepcid.
2,4-Thiazolidinedione
2,4-Thiazolidinedione serves as the core structure for glitazone antidiabetic drugs like pioglitazone, featuring a saturated thiazolidine ring (hydrogenated thiazole). Classifies under HTS 2934.10.90.00 as 'other' thiazole ring compounds including hydrogenated forms per heading description.