C4H6O3
102.09 g/mol
Food AdditiveWarning
2-oxobutanoic acid
CAS600-18-0EC209-986-9
Category
Food Additive
Compound Class
Organic Acid
Primary Use
Flavoring agent
2-Oxobutanoic acid is a short-chain keto acid that serves as a flavoring agent. It is structurally characterized by the presence of both a ketone and a carboxylic acid functional group.
Flavoring agent in food
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Referencestereoisomer of
Alpha-KetobutyricAcid-13C4,d2SodiumSalt
CAS360769-17-1
research compound
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 2-oxobutanoic acid (CAS 600-18-0) is 2918.30.
HS code (international, 6-digit)
2918.30
EU CN code (8-digit)
2918 30 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-oxobutanoic acid
InChIKey
TYEYBOSBBBHJIV-UHFFFAOYSA-N
SMILES
CCC(=O)C(=O)O
Synonyms (51)
- 2KT
- 2-Ketobutanoate
- 2-Ketobutanoic acid
- 2-Oxo-n-butyrate
- 2-Oxo-n-butyric acid
- 2-Oxobutanoate
- 2-Oxobutanoic acid (Standard)
- 2-keto-butyrate
- 2-keto-n-butyric acid
- 2-ketobutyric acid
- 2-oxobutanoic acid
- 2-oxobutyrate
- 2-oxobutyric acid
- 3-Methylpyruvate
- 3-Methylpyruvic acid
- 4b5t
- ?-Ketobutyric Acid
- BUTANOIC ACID, 2-OXO-
- Butanoic acid, 2-oxo- (9CI)
- Butyric acid, 2-oxo-
- Butyric acid, 2-oxo- (8CI)
- FEMA No. 3723
- Formic acid, propionyl-
- I+--Ketobutyric acid
- Ketobutyrate
- Propionylformic acid
- Pyruvic acid, methyl-
- a-Ketobutyrate
- a-Ketobutyric acid
- a-Oxo-n-butyrate
- a-Oxo-n-butyric acid
- a-Oxobutyrate
- a-Oxobutyric acid
- a-keto-n-Butyrate
- a-keto-n-Butyric acid
- alpha-Keto-n-butyrate
- alpha-Keto-n-butyric acid
- alpha-Ketobutric acid
- alpha-Oxo-n-butyrate
- alpha-Oxo-n-butyric acid
- alpha-Oxobutanoic acid
- alpha-Oxobutyrate
- alpha-ketobutyrate
- alpha-ketobutyric acid
- alpha-oxobutyric acid
- methyl pyruvic acid
- oxobutyric acid
- propionyl-formate
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