(R)-α-Amino-1,4-Cyclohexadiene-1-Acetic Acid
(R)-α-Amino-1,4-cyclohexadiene-1-acetic acid is a chiral amino acid derivative explicitly named in HTS 2922.49.60.00, featuring amino and carboxylic acid oxygen functions. Used primarily in synthesis of enantiopure pharmaceuticals and fine chemicals. Classified here as an amino-acid other than those with multiple oxygen functions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing more than one kind of oxygen function (e.g., additional ester or ether)
Amino-acids with multiple oxygen functions are separated to 2922.50 per subheading structure.
If imported as the corresponding ester without amino group emphasis
Benzenoid acid esters classify under 2916; loss of amino-acid character shifts heading.
If the cyclohexadiene ring qualifies as a purine or pyrimidine derivative
Specific heterocyclic systems take precedence under 2933 per chapter classification rules.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide stereochemical analysis (chiral HPLC) to confirm (R)-enantiomer identity matching the tariff description
• Include REACH/ TSCA registration docs for US import compliance as a research chemical
• Check for salt forms; classify with the acid per chapter note 3(C)(1)
Related Products under HTS 2922.49.60.00
3-Aminocrotonic Acid Methyl Ester
3-Aminocrotonic acid methyl ester is a chemically defined organic compound featuring both amino and ester oxygen functions, specifically listed under HTS 2922.49.60.00. It serves as a key intermediate in organic synthesis, particularly for pharmaceuticals and agrochemicals. This product falls under heading 2922 as an amino-acid ester with a single type of oxygen function.
(R)-α-Amino-1,4-Cyclohexadiene-1-Acetic Acid Sodium Salt
Sodium salt form of (R)-α-Amino-1,4-cyclohexadiene-1-acetic acid, specifically provided for under HTS 2922.49.60.00 following chapter note 3(C)(1) for inorganic salts of organic acids. Used in biotech applications requiring water-soluble amino acid derivatives. Retains classification as the named amino-acid salt.
3-Aminocrotonic Acid Methyl Ester Hydrochloride Salt
The hydrochloride salt of 3-aminocrotonic acid methyl ester, classified with the parent ester under HTS 2922.49.60.00 per chapter note 3(C)(1). This stabilized form is commonly used in pharmaceutical manufacturing to improve handling and solubility. It maintains the amino-ester oxygen function characteristic of heading 2922.
High Purity 3-Aminocrotonic Acid Methyl Ester ≥99%
Pharmaceutical-grade 3-aminocrotonic acid methyl ester with ≥99% purity, explicitly named in HTS 2922.49.60.00. Supplied with stabilizer for safe transport per chapter note (f). Critical intermediate for H1-receptor antagonist synthesis.