L-threonine
Oxygen-function amino-compounds. > Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function > L-threonine
Duty Rate (from China)
Products classified under Tariff item 2922.50.00.20
2-Nitro-5-[(2,3-Dihydroxy)propoxy]-N-methyl Aniline
2-Nitro-5-[(2,3-Dihydroxy)propoxy]-N-methyl Aniline is a chemically defined aromatic amino compound with multiple oxygen functions, including a dihydroxypropoxy group. It is used as a dye coupler in oxidative permanent hair coloring systems, falling under the oxygen-function amino-compounds of this tariff item.
2922.50.002-Nitro-5-(2-Hydroxyethoxy)-N-methyl Aniline
2-Nitro-5-(2-Hydroxyethoxy)-N-methyl Aniline is a chemically defined aromatic amino compound with a hydroxyethoxy oxygen function. It serves as an oxidation base or coupler in professional permanent hair coloring systems, fitting the oxygen-function amino-compound classification.
2922.50.003,4-Diaminophenetole Dihydrogen Sulfate
3,4-Diaminophenetole Dihydrogen Sulfate is a chemically defined aromatic amino-alcohol-phenol compound with oxygen function, specifically a sulfate salt. It is primarily used as an intermediate in the synthesis of hair dyes and pharmaceuticals, falling under this tariff item as an oxygen-function amino-compound.
2922.50.003-Methoxy-4-[(2-Hydroxyethyl)amino] Nitrobenzene
3-Methoxy-4-[(2-Hydroxyethyl)amino] Nitrobenzene is a nitrobenzene derivative with methoxy and hydroxyethylamino oxygen functions. It is utilized as a direct dye or coupler in semi-permanent hair colorants, qualifying as an oxygen-function amino-compound under this tariff item.
2922.50.004-(2-Hydroethoxy)-1,3-Phenylene Diamine Dihydrochloride
4-(2-Hydroethoxy)-1,3-Phenylene Diamine Dihydrochloride is a dihydrochloride salt of a diaminobenzene derivative with a hydroxyethoxy oxygen function. It is a key developer in low-ammonia permanent hair dyes, falling under the oxygen-function amino-compound classification.
2922.50.004-[(2-Hydroxyethyl)amino]-3-Nitrophenol
4-[(2-Hydroxyethyl)amino]-3-Nitrophenol is a nitrophenol compound with a hydroxyethylamino substituent, featuring both amino and phenol oxygen functions. It is employed in oxidative hair dye systems for red-brown shades, fitting the amino-acid-phenol type of this tariff item.
2922.50.00Atenolol
Atenolol is a cardioselective beta-blocker with an aromatic amino-phenol structure containing oxygen functions, classified under tariff item 2922.50.00. It is used for hypertension management and angina prevention. The compound's chemical structure and cardiovascular therapeutic use determine its classification.
2922.50.00Bisoprolol Fumarate
Bisoprolol fumarate is a highly selective beta-1 adrenergic receptor blocker with aromatic amino-alcohol oxygen functionality, classified under tariff item 2922.50.00. It is essential for treating chronic stable angina and heart failure. The compound's chemical structure and cardiovascular application support its classification.
2922.50.00Bulk D(-)-p-Hydroxyphenylglycine Free Base Stabilized
Bulk D(-)-p-Hydroxyphenylglycine Free Base Stabilized is a chemically defined aromatic amino-acid-phenol compound with an oxygen function, classified under tariff item 2922.50.00. The stabilized free base form is suitable for industrial use and is not converted to a salt, keeping it within this heading.
2922.50.00Carvedilol
Carvedilol is a non-selective beta/alpha-1 blocker with complex aromatic amino-oxygen functionality, classified under tariff item 2922.50.00. It treats congestive heart failure and hypertension through vasodilation. The compound's chemical structure and therapeutic use determine its classification under this heading.
2922.50.00DL-3-(3,4-Dihydroxyphenyl)alanine (DL-DOPA)
DL-3-(3,4-Dihydroxyphenyl)alanine (DL-DOPA) is a synthetic amino acid precursor to dopamine, featuring dihydroxyphenyl and carboxylic acid oxygen functions. It is used in pharmaceutical synthesis for treating Parkinson's disease, falling under this tariff item as an amino-acid-phenol.
2922.50.00DL-Phenylephrine Base
DL-Phenylephrine Base is the free amine form of the sympathomimetic drug used in nasal decongestants and eye drops. It features phenolic OH, alcohol, and amino groups, making it an aromatic amino-alcohol-phenol, fitting this tariff item.
2922.50.00Dobutamine Base
Dobutamine Base is a synthetic catecholamine (aromatic amino-alcohol-phenol) used in cardiac stress testing. It fits the oxygen-function amino-compound criteria of this tariff item as a chemically defined compound.
2922.50.00D(-)-p-Hydroxyphenylglycine Arginine Salt
D(-)-p-Hydroxyphenylglycine Arginine Salt is an organic-organic salt formed between the amino-acid-phenol and arginine, classified under Chapter 29 note (C)(2) with the later numerical heading. It is used in basic buffer applications.
2922.50.00D(-)-p-Hydroxyphenylglycine Calcium Salt
D(-)-p-Hydroxyphenylglycine Calcium Salt is an inorganic salt of the aromatic amino-acid-phenol, classified under Chapter 29 note (C)(1) with the parent organic compound. It is used in pharmaceutical and chemical applications.
2922.50.00D(-)-p-Hydroxyphenylglycine Hydrochloride Salt
D(-)-p-Hydroxyphenylglycine Hydrochloride Salt is a hydrochloric acid salt of the aromatic amino-acid-phenol, classified with the parent compound per Chapter 29 note (C)(1). It is primarily imported for pharmaceutical synthesis.
2922.50.00D(-)-p-Hydroxyphenylglycine in Aqueous Solution (20%)
D(-)-p-Hydroxyphenylglycine in Aqueous Solution (20%) is a water-dissolved form of the chemically defined compound, allowed under Chapter 29 note (d). The solution facilitates safe transport and dosing, and the solvent does not render it suitable for a specific use.
2922.50.00D(-)-p-Hydroxyphenylglycine Lysine Salt
D(-)-p-Hydroxyphenylglycine Lysine Salt is an organic-organic salt formed between the amino-acid-phenol and lysine, classified per Chapter 29 note (C)(2) with the later numerical heading. It is used in nutritional-pharma hybrid synthesis.
2922.50.00D(-)-p-Hydroxyphenylglycine Magnesium Salt Hydrate
D(-)-p-Hydroxyphenylglycine Magnesium Salt Hydrate is a hydrated inorganic salt of the aromatic amino-acid-phenol, classified with the parent compound per Chapter 29 note (C)(1). The hydrate form is acceptable under the heading.
2922.50.00D(-)-p-Hydroxyphenylglycine Meglumine Salt
D(-)-p-Hydroxyphenylglycine Meglumine Salt is an organic salt formed between the amino-acid-phenol and meglumine, classified per Chapter 29 note (C)(2) with the later numerical heading. It is common in oral drug development.
2922.50.00D(-)-p-Hydroxyphenylglycine Potassium Salt
D(-)-p-Hydroxyphenylglycine Potassium Salt is an inorganic salt of the aromatic amino-acid-phenol, classified with the parent compound per Chapter 29 note (C)(1). It is used in bioprocesses for antibiotic side-chain synthesis.
2922.50.00D(-)-p-Hydroxyphenylglycine Sodium Salt
D(-)-p-Hydroxyphenylglycine Sodium Salt is a sodium salt of the aromatic amino-acid-phenol, explicitly covered by Chapter 29 note (C)(1) for inorganic salts. It is widely used in the manufacture of antibiotics.
2922.50.00D(-)-p-Hydroxyphenylglycine Tromethamine Salt
D(-)-p-Hydroxyphenylglycine Tromethamine Salt is an organic salt formed between the amino-acid-phenol and tromethamine, classified per Chapter 29 note (C)(2) with the later numerical heading. It is used for pH-buffered pharma formulations.
2922.50.00D(-)-p-Hydroxyphenylglycine with Emetic Tracer
D(-)-p-Hydroxyphenylglycine with Emetic Tracer includes an added emetic for safety identification, permitted under Chapter 29 note (g). The addition does not make the product suitable for a specific use, so it remains in this heading.
2922.50.00D(-)-p-Hydroxyphenylglycine with Stabilizer (Silica)
D(-)-p-Hydroxyphenylglycine with Stabilizer (Silica) includes silica as an anti-caking agent, permitted under Chapter 29 note (f) for necessary preservation. The stabilizer does not render the product suitable for a specific use.
2922.50.00High-Purity D(-)-p-Hydroxyphenylglycine p-Toluenesulfonate Salt
High-Purity D(-)-p-Hydroxyphenylglycine p-Toluenesulfonate Salt is an organic acid salt of the amino-acid-phenol, classified per Chapter 29 note (C)(2) with the later numerical heading. It is used in the resolution of enantiomers.
2922.50.00Isoetharine Hydrochloride API
Isoetharine hydrochloride is a bronchodilator active pharmaceutical ingredient (API) with an aromatic amino-alcohol-phenol structure, qualifying as an oxygen-function amino-compound under tariff item 2922.50.00. It is imported in bulk powder form for use in respiratory therapy formulations. The compound's chemical structure and pharmaceutical grade determine its classification under this heading.
2922.50.00Isoxsuprine Hydrochloride Bulk
Isoxsuprine hydrochloride is a vasoactive drug with an aromatic amino-phenol oxygen function, classified under tariff item 2922.50.00 as an oxygen-function amino-compound. It is imported in bulk powder form for veterinary and human pharmaceutical formulations. The compound's specific chemical structure and pharmaceutical use support its classification.
2922.50.00Labetalol Hydrochloride
Labetalol hydrochloride features dual alpha/beta-blocking activity in an aromatic amino-alcohol-phenol framework with oxygen functions, classified under tariff item 2922.50.00. It is primarily indicated for hypertension management. The compound's chemical structure and cardiovascular therapeutic use support its classification.
2922.50.00Levobunolol Base
Levobunolol Base is an aromatic amino-alcohol-phenol derivative structurally analogous to phenylephrine, used as a beta-blocker intermediate for glaucoma treatment. It is classified here as an oxygen-function amino-compound.
2922.50.00N-Acetyl-4-(2-Hydroxyethylamino)-3-Nitrophenol
N-Acetyl-4-(2-Hydroxyethylamino)-3-Nitrophenol is an acetylated derivative of 4-[(2-Hydroxyethyl)amino]-3-nitrophenol, maintaining the oxygen-function amino character. It serves as an intermediate for modified hair dye couplers with improved stability, falling under this tariff item.
2922.50.00N-Ethyl-N-(2-methoxycarbonylethyl)aniline
N-Ethyl-N-(2-methoxycarbonylethyl)aniline is a key dye intermediate containing both amino and ester oxygen functions on an aromatic ring. It is used primarily in manufacturing azo dyes and falls under this tariff item as an oxygen-function amino-compound.
2922.50.00Nylidrin Hydrochloride Pharmaceutical Grade
Nylidrin hydrochloride, also known as buphenine HCl, is a cardiovascular drug with an aromatic amino-alcohol structure containing oxygen functions, classified under tariff item 2922.50.00. It is imported as a high-purity API for the treatment of peripheral vascular disorders. The compound's chemical structure and pharmaceutical application determine its classification.
2922.50.00Phenylephrine Hydrochloride Powder
Phenylephrine hydrochloride is an aromatic amino-alcohol compound with oxygen function, classified under tariff item 2922.50.00. It is used primarily as a nasal decongestant and vasoconstrictor in pharmaceutical formulations. The compound's specific chemical structure and therapeutic use support its classification under this heading.
2922.50.00p-Hydroxyphenyl Glycine Methyl Ester Hydrochloride
p-Hydroxyphenyl Glycine Methyl Ester Hydrochloride is the hydrochloride salt of the methyl ester derived from (R)-α-Amino-4-hydroxybenzene acetic acid. It is used in peptide synthesis and pharmaceutical applications, classifiable under this tariff item per ester and salt rules.
2922.50.00(R)-α-Amino-4-Hydroxybenzene Acetic Acid (D-(-)-p-Hydroxyphenyl Glycine)
(R)-α-Amino-4-Hydroxybenzene Acetic Acid (D-(-)-p-Hydroxyphenyl Glycine) is a chiral aromatic amino acid featuring hydroxy and carboxylic acid oxygen functions. It is a pharmaceutical intermediate for the synthesis of antibiotics like amoxicillin, falling under this tariff item as an amino-acid-phenol.
2922.50.00Salbutamol (Albuterol) Base Powder
Salbutamol, also known as albuterol, is a beta-2 adrenergic agonist with an aromatic amino-alcohol oxygen function, classified under tariff item 2922.50.00. It is imported as a bulk API for use in asthma inhalers and other respiratory medications. The compound's chemical structure and pharmaceutical application determine its classification.
2922.50.00Sterile D(-)-p-Hydroxyphenylglycine Ammonium Salt
Sterile D(-)-p-Hydroxyphenylglycine Ammonium Salt is an ammonium salt of the aromatic amino-acid-phenol, classified per Chapter 29 note (C)(2) for organic base salts. It is intended for sterile fermentation media in antibiotic production.
2922.50.00Terbutaline Sulfate API
Terbutaline sulfate is a bronchodilator with an aromatic amino-alcohol oxygen function, classified under tariff item 2922.50.00. It is imported as a pure salt form for pharmaceutical production of tablets and inhalers. The compound's chemical structure and therapeutic use support its classification under this heading.
2922.50.00Toluidine Carbonate (Carbonic acid methyl ester diester with 2,2'-(m-tolylamino)diethanol)
Toluidine Carbonate (Carbonic acid methyl ester diester with 2,2'-(m-tolylamino)diethanol) is a specific aromatic amino-compound with carbonate ester oxygen functions. It is used as a chemical intermediate in pesticide and polymer synthesis, falling under this tariff item.