4-Phenylthiazole
4-Phenylthiazole consists of an aromatic thiazole ring with phenyl substituent at position 4, used in materials science and pharma. HTS 2934.10.20.00 perfectly matches 'aromatic' unfused thiazole compounds. Simple biaryl heterocyclic structure.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If second ring system creates fused-like conjugation
Complex polycyclic heterocycles may classify under 2933 if not simple substitution.
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Import Tips & Compliance
• UV-Vis spectrum confirming extended aromatic conjugation
• Declare molecular formula C9H7NS explicitly
• High purity (>99%) prevents mixture classification challenges
Related Products under HTS 2934.10.20.00
2-Aminothiazole
2-Aminothiazole is an aromatic heterocyclic compound containing an unfused thiazole ring with an amino group at the 2-position. It falls under HTS 2934.10.20.00 as an aromatic thiazole derivative used primarily as a pharmaceutical intermediate. This chemically defined organic compound meets Chapter 29 requirements for separate classification.
4-Methylthiazole
4-Methylthiazole is a simple aromatic thiazole ring with a methyl substituent at the 4-position, used in flavor synthesis and pharmaceuticals. Classified under HTS 2934.10.20.00 as 'other' aromatic unfused thiazole compounds. Meets Chapter 29 criteria for chemically defined heterocycles.
Thiamine Hydrochloride (Vitamin B1)
Thiamine hydrochloride contains a substituted pyrimidine-thiazolium structure with an unfused aromatic thiazole ring, classified as a vitamin but tariffed as its heterocyclic component. Falls under HTS 2934.10.20.00 as 'other' aromatic thiazole compound per Chapter 29 precedence. The thiazole ring determines classification over vitamin function.
2-Mercaptothiazoline
2-Mercaptothiazoline (2-thiazoline-2-thiol) features a hydrogenated thiazole ring (thiazoline) with aromatic character through conjugation, used in rubber vulcanization. HTS 2934.10.20.00 covers 'whether or not hydrogenated' aromatic/modified aromatic thiazoles. Chemically defined per Chapter 29 note (a).
Ritodrine Hydrochloride
Ritodrine hydrochloride is a beta-adrenergic agonist containing a phenethylamine linked to a modified aromatic thiazole ring, used as tocolytic agent. The unfused thiazole determines HTS 2934.10.20.00 classification as 'other' aromatic thiazole. Pharmaceutical intermediates with heterocyclic principal structure.
Famotidine
Famotidine, an H2-receptor antagonist, contains a thiazole ring linked to guanidine and imidazole moieties in its aromatic heterocyclic structure. Classified under HTS 2934.10.20.00 as the principal thiazole component per numerical order rule. Used in ulcer treatment pharmaceuticals.