Guaiacol and its derivatives
Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives > Ether-phenols, ether-alcohol-phenols and their halogenated, sulfonated, nitrated or nitrosated derivatives: > Guaiacol and its derivatives
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2909.50.20.00
Guaiacol (Methoxyphenol)
Guaiacol, chemically 2-methoxyphenol (C7H8O2), is a naturally occurring organic compound found in wood smoke and creosote, used primarily as a precursor in pharmaceutical synthesis and as an expectorant in cough syrups. It falls under HTS 2909.50.20.00 as a chemically defined ether-phenol. This product is imported in pure form for industrial chemical applications.
Guaiacol Carbonate
Guaiacol carbonate is a derivative formed by esterification of guaiacol, used historically as an antitussive agent in respiratory medications. As a chemically defined derivative of guaiacol (ether-phenol), it qualifies under HTS 2909.50.20.00. Imported primarily for pharmaceutical intermediate production.
4-Methylguaiacol (Creosol)
4-Methylguaiacol, also known as creosol (4-methyl-2-methoxyphenol), is a guaiacol derivative obtained from guaiacum resin or wood creosote, used in organic synthesis and as a disinfectant. It is specifically listed under HTS 2909.50.20.00 as a guaiacol derivative ether-phenol. Commonly imported for flavor and fragrance applications.
Guaiacol Glycerol Ether
Guaiacol glycerol ether is a specialized derivative where guaiacol is ether-linked to glycerol, used in pharmaceutical formulations for expectorant properties. Classified under HTS 2909.50.20.00 as it maintains the core guaiacol ether-phenol structure. Imported for synthesis of advanced respiratory therapeutics.
Vanillin (4-Hydroxy-3-methoxybenzaldehyde)
Synthetic vanillin, chemically 4-hydroxy-3-methoxybenzaldehyde, is a guaiacol derivative produced via guaiacol oxidation or lignin processes, widely used as vanilla flavoring. Despite aldehyde function, its guaiacol ether-phenol nature places it under HTS 2909.50.20.00 per chapter numerical order rules. Imported in bulk for food and fragrance industries.
Guaiacyl Acetate
Guaiacyl acetate is the acetyl ester derivative of guaiacol, used as an intermediate in organic synthesis and historical antitussive formulations. As an ester of ether-phenol per chapter note 5(A), it follows guaiacol classification under HTS 2909.50.20.00. Imported for fine chemical manufacturing.
Methylguaiacol (2-Methoxy-4-methylphenol)
Methylguaiacol (2-methoxy-4-methylphenol) is a positional isomer derivative of guaiacol used in flavor chemistry and as a synthetic intermediate. It qualifies under HTS 2909.50.20.00 as a chemically defined guaiacol derivative ether-phenol. Bulk imported for aroma compound production.
Guaiacol Phosphate
Guaiacol phosphate represents phosphorylated derivatives of guaiacol used in specialized pharmaceutical applications and organophosphorus synthesis. As an organo-inorganic compound derived from ether-phenol, classified under HTS 2909.50.20.00 before heading 2931 provisions. Industrial chemical import.
Isoeugenol (2-Methoxy-4-(1-propenyl)phenol)
Isoeugenol is an unsaturated guaiacol derivative allylbenzene used in perfumery and as vanillin precursor via oxidation. Its ether-phenol structure maintains HTS 2909.50.20.00 classification despite propenyl substitution. Essential import for fragrance synthesis.
Guaiacol Formaldehyde
Guaiacol-formaldehyde refers to condensation products or protected forms used in resin synthesis and pharmaceutical intermediates. As chemically defined guaiacol derivatives maintaining ether-phenol function, under HTS 2909.50.20.00. Industrial resin precursor import.