DL-3-(3,4-Dihydroxyphenyl)alanine (DL-DOPA)
DL-3-(3,4-Dihydroxyphenyl)alanine, commonly known as DL-DOPA, is a synthetic form of the amino acid precursor to dopamine used in pharmaceutical synthesis for treating Parkinson's disease. It falls under HTS 2922.50.10.00 as an explicitly listed aromatic amino-acid-phenol with oxygen function, containing both amino and phenolic hydroxy groups.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not one of the four specifically enumerated compounds
Other aromatic amino-alcohol-phenols or amino-acid-phenols with oxygen function fall under the residual subheading.
If when imported as L-enantiomer (levodopa) in bulk heterocyclic form
Specific pharmaceutical intermediates like L-DOPA may shift to Chapter 29 heterocyclics based on structure priority.
If formulated with excipients for direct medicinal use
Becomes immunological product or human blood derivative when no longer pure chemical compound.
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Import Tips & Compliance
• Provide chemical purity certificates and CAS number (59-92-7) documentation to verify identity as listed compound
• Ensure proper Hazard Communication labeling (H301, H361d) and comply with TSCA/DOT regulations for import
• Avoid misclassification as finished pharmaceutical; declare as bulk chemical intermediate
Related Products under HTS 2922.50.10.00
N-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, explicitly listed under this HTS code. Used primarily in manufacturing azo dyes and pigments for textiles and inks.
DL-Phenylephrine Base
DL-Phenylephrine base is the free amine form of the sympathomimetic drug used in nasal decongestants and eye drops, explicitly named in HTS 2922.50.10.00 as an aromatic amino-alcohol-phenol. It features phenolic OH, alcoholic OH, and amino groups on benzene ring.
Toluidine Carbonate (Carbonic acid methyl ester diester with 2,2'-(m-tolylamino)diethanol)
Toluidine carbonate is a specific aromatic amino-compound with carbonate ester oxygen functions, listed under HTS 2922.50.10.00, used as a chemical intermediate in pesticide and polymer synthesis. Its structure features amino-phenol derivatives linked via carbonate.
Levobunolol Base
Levobunolol base, an aromatic amino-alcohol-phenol derivative structurally analogous to listed phenylephrine, used as beta-blocker intermediate for glaucoma treatment. Classified here under the specific enumerated compounds provision of HTS 2922.50.10.00.
Dobutamine Base
Dobutamine base is a synthetic catecholamine (aromatic amino-alcohol-phenol) used in cardiac stress testing, fitting the oxygen-function amino-compound criteria of HTS 2922.50.10.00 as listed chemical class.