4-Phenylbutyric Acid
4-Phenylbutyric acid (C6H5(CH2)3COOH) is a saturated acyclic monocarboxylic butanoic acid with an aromatic phenyl substituent. Classified under HTS 2915.60.10.00 as an aromatic derivative of butanoic acid per heading 2915 structure. Used in chemical synthesis and as a histone deacetylase inhibitor.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing additional benzylic alcohol functions
Longer chain aromatic acids or derivatives with oxygen functions may fall under subsequent headings per classification note requiring latest numerical order.
If imported as carboxamide derivative
Amide derivatives of carboxylic acids classify under Chapter 29 heading 2924 rather than the parent acid heading.
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Import Tips & Compliance
• Include NMR or GC-MS spectra verifying aromatic butanoic structure; declare exact carbon chain length to distinguish from pentanoic acids; avoid misclassification as Chapter 29 acyclic hydrocarbons
Related Products under HTS 2915.60.10.00
Sodium Phenylbutyrate
Sodium phenylbutyrate is the sodium salt of 4-phenylbutanoic acid, an aromatic saturated acyclic monocarboxylic acid. It falls under HTS 2915.60.10.00 as a salt of an aromatic butanoic acid, fitting Chapter 29 note (C)(1) for inorganic salts of organic acid-function compounds classified with the parent acid. Used primarily in medical treatments for urea cycle disorders.
Methyl 4-Phenylbutyrate
Methyl 4-phenylbutyrate is the methyl ester of 4-phenylbutanoic acid, an aromatic butanoic acid ester. Falls under HTS 2915.60.10.00 per Chapter 29 note classifying esters with the parent acid-function compound occurring last in numerical order. Used as fragrance intermediate and flavoring agent.
Ethyl 4-Phenylbutyrate
Ethyl ester of 4-phenylbutyric acid, specifically classified with the parent aromatic butanoic acid under HTS 2915.60.10.00 per Chapter 29 note (B) for ethyl esters. Common in flavor and fragrance industry as apple-like aroma compound.
Calcium 4-Phenylbutyrate
Calcium salt of 4-phenylbutanoic acid, classified as aromatic butanoic acid salt under HTS 2915.60.10.00 following Chapter 29 note (C)(1). Used in nutritional supplements and pharmaceutical formulations.
4-Phenylbutyryl Chloride
Acid chloride derivative of 4-phenylbutanoic acid, classified with parent aromatic acid under HTS 2915.60.10.00 per Chapter 29 note (E). Reactive intermediate for ester and amide synthesis in organic chemistry.
Isobutyl 4-Phenylbutyrate
Isobutyl ester of aromatic 4-phenylbutyric acid, following parent acid classification in HTS 2915.60.10.00 per Chapter 29 ester rules. Specialty fragrance chemical with fruity odor profile.