4-Hydroxyphenylpyruvic Acid
4-Hydroxyphenylpyruvic acid is a keto acid featuring both a carboxylic acid group and a ketone functionality, classifying it under HTS 2918.30.90.00 as a carboxylic acid with ketone function but without other oxygen functions beyond those specified. It is used in biochemical research and as an intermediate in pharmaceutical synthesis.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If marketed solely as a ketone without emphasizing carboxylic function
Pure aromatic ketones without principal carboxylic acid function classify under 2914, but note 3 prioritizes acid function.
If containing heterocyclic ring structure
Heterocyclic compounds with oxygen take precedence over acyclic keto acids per chapter notes.
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 detailed chemical analysis (NMR, MS) confirming structure and purity to verify classification under 2918.30
• Include Safety Data Sheet (SDS) and transport certificates for hazardous goods handling during customs clearance
• Avoid misclassification as aromatic ketones (2914) by documenting the dominant carboxylic acid function
Related Products under HTS 2918.30.90.00
Benzoylformic Acid
Benzoylformic acid (phenylglyoxylic acid) is an aromatic alpha-keto acid with both carboxylic and ketone groups, falling under HTS 2918.30.90.00 for carboxylic acids with ketone function. It serves as a key intermediate in organic synthesis and pharmaceutical production.
Pyruvic Acid
Pyruvic acid (2-oxopropanoic acid) is the simplest alpha-keto acid with both carboxylic and ketone functionalities, fitting HTS 2918.30.90.00 criteria. It is essential in organic synthesis, cosmetics, and as a biochemical reagent.
Oxaloacetic Acid
Oxaloacetic acid features a ketone group beta to the carboxylic acid, meeting HTS 2918.30.90.00 for keto-functional carboxylic acids. It plays a critical role in the citric acid cycle and biochemical studies.
Levulinic Acid
Levulinic acid (4-oxopentanoic acid) contains a ketone group gamma to the carboxylic acid, qualifying for HTS 2918.30.90.00. It is a platform chemical derived from biomass for polymer and fuel applications.
2-Ketobutyric Acid
2-Ketobutyric acid is an alpha-keto acid with four carbons, fitting HTS 2918.30.90.00 as a carboxylic acid with ketone function. Applied in amino acid synthesis and metabolic pathway studies.
3-Ketobutyric Acid
3-Ketobutyric acid, a beta-keto acid, contains ketone and carboxylic functions per HTS 2918.30.90.00 classification. Used in organic synthesis despite instability.