DL-3-(3,4-Dihydroxyphenyl)alanine (DL-DOPA)
DL-3-(3,4-Dihydroxyphenyl)alanine (DL-DOPA) is a synthetic form of the amino acid precursor to dopamine, featuring hydroxy and carboxylic acid oxygen functions. It is used in pharmaceutical synthesis for treating Parkinson's disease and falls under this tariff item as an oxygen-function amino-compound.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If it is a separate chemically defined compound not covered by more specific headings
Heading 29.42 covers other organic compounds not elsewhere specified.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is a separate chemically defined compound with the correct CAS number
• Provide documentation showing the amino-acid-phenol structure to support classification
• If imported for pharmaceutical use, verify it is not classifiable as a medicament under Chapter 30
Related Products under Tariff item 2922.50.00
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 (nitro, hydroxy, and ether groups). It falls under this tariff item as an oxygen-function amino-compound, specifically an amino-alcohol-phenol derivative, and is used as a dye coupler in oxidative permanent hair coloring systems.
2-Nitro-5-(2-Hydroxyethoxy)-N-methyl Aniline
2-Nitro-5-(2-Hydroxyethoxy)-N-methyl Aniline is an aromatic amino compound with nitro and hydroxyethoxy oxygen functions, making it an oxygen-function amino-compound. It is used as an oxidation base or coupler in professional permanent hair coloring formulations and is classifiable under this tariff item.
3,4-Diaminophenetole Dihydrogen Sulfate
3,4-Diaminophenetole Dihydrogen Sulfate is a chemically defined aromatic amino-alcohol-phenol compound with oxygen function, specifically an amino-acid-phenol derivative. It is primarily used as an intermediate in the synthesis of dyes and pigments, falling under this tariff item as an oxygen-function amino-compound.
3-Methoxy-4-[(2-Hydroxyethyl)amino] Nitrobenzene
3-Methoxy-4-[(2-Hydroxyethyl)amino] Nitrobenzene is a nitrobenzene derivative with methoxy and hydroxyethylamino oxygen functions, making it an oxygen-function amino-compound. It is utilized as a direct dye or coupler in semi-permanent hair colorants and is classifiable under this tariff item.
4-(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 an oxygen-function amino-compound and a key developer in low-ammonia permanent hair dyes, classifiable under this tariff item.
4-[(2-Hydroxyethyl)amino]-3-Nitrophenol
4-[(2-Hydroxyethyl)amino]-3-Nitrophenol is a nitrophenol compound with a hydroxyethylamino substituent, making it an amino-acid-phenol type oxygen-function compound. It is employed in oxidative hair dye systems for red-brown shades and falls under this tariff item.