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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China5.5%+35.0%40.5%
🇲🇽Mexico5.5%+10.0%15.5%
🇨🇦Canada5.5%+10.0%15.5%
🇩🇪Germany5.5%+10.0%15.5%
🇯🇵Japan5.5%+10.0%15.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3302.10Lower: 10% vs 40.5%

If put up as complex fragrance mixtures for retail

Mixtures containing >20% odoriferous substances for perfumery classify under Chapter 33, not pure Chapter 29 compounds.

2917.39.70.00Higher: 41.5% vs 40.5%

If the esterifying alcohol creates phenolic function

Esters with phenolic alcohols classify with phenol-function compounds in heading 2917 per Chapter notes.

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Import Tips & Compliance

Declare ester type and parent acid structure in entry docs; provide REACH/SDS confirming non-specific use solvent status per Chapter 29 note (e); watch for flavoring preparations reclassification

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.

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.

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.