Basic information
- Standard SMILES
CC(C)C(=O)C(=O)O- InChIKey
QHKABHOOEWYVLI-UHFFFAOYSA-N- Molecular formula
- C5H8O3
- Average molar mass
- 116.11 g/mol
- Monoisotopic mass
- 116.04734411
Names & identifiers
- Preferred name
- 3-Methyl-2-oxobutanoic acid
- IUPAC
- 3-methyl-2-oxobutanoic acid
- English name
- 3-METHYL-2-OXOBUTYRIC ACIDDISCONTINUED
- Molecular formula
- C5H8O3
- Molecular weight
- 116.12
Names & synonyms
Show more names
Database identifiers
- CAS
759-05-7- PubChem CID
- 49
- DTXSID
DTXSID6061078- ChEMBL
CHEMBL146554- ChEBI
CHEBI:16530- UNII
- 34P71D50E0
- EC Number
- 212-065-4
- Nikkaji
- J39.558G
Properties
Computed structural properties
- XLogP
- 0.7
- Topological polar surface area
- 54.4 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 2
- Heavy atoms
- 8
- Formal charge
- 0
- Complexity
- 115
Experimental & physicochemical properties
Solubility
Soluble in water
Soluble (in ethanol)
Boiling Point
170.5
251 °C
Melting Point
31.5
31.5 °C
Physical Description
Solid
Pale yellow liquid; fruity aroma
Physicochemical properties
- Melting point
- 31.5 ℃ · 31.5℃
- Boiling point
- 170.5 ℃ · 170.5℃
- Density
- 0.9968 · 0.9968
- refractive index
- 1.385 · 1.3850
- FEMA
- 3869 · 3869 | 3-METHYL-2-OXOBUTANOIC ACID
- FLAVIS Number
- 8.051 · 08.051 | 3-Methyl-2-oxobutyric acid
- storage temp.
- 2 · 2-8°C
- solubility
- Benzene (Slightly), Chloroform, Methanol (Slightly)
- pka
- 2.57 · 2.57±0.54(Predicted)
- form
- Oil
- color
- Colourless
- Odor
- fruity
- Odor Type
- fruity
- Water Solubility
- 400.6 g/L · 400.6g/L(20 ºC)
- JECFA Number
- 631 · 631
- LogP
- -0.36 · -0.36
- Substances Added to Food (formerly EAFUS)
- 3 · 3-METHYL-2-OXOBUTANOIC ACID
- CAS DataBase Reference
- 759 · 759-05-7
- FDA UNII
- 34 P71D50E0 · 34P71D50E0
- EPA Substance Registry System
- 2 · 2-Ketoisovaleric acid (759-05-7)
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 302 · H302
- Precautionary statements
- 280 · P280-P305+P351+P338
- TSCA
- TSCA listed
- HS Code
- 2918300090 · 2918300090
Safety & regulation
GHS classification
GHS Classification
Danger
H302 (33.3%): Harmful if swallowed [Warning Acute toxicity, oral];H314 (66.7%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation];H318 (33.3%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 3 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.;Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard information
Toxicology
Regulatory information
Safety data
- tsca
- TSCA listed
- hs_code
- 2918300090
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- Hazard statements
- H302
- Precautionary statements
- P280-P305+P351+P338
Chemistry & industry
Pharmacology
Metabolite Pathways
2-Methyl-3-Hydroxybutryl CoA Dehydrogenase Deficiency;3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency;3-hydroxyisobutyric acid dehydrogenase deficiency;3-hydroxyisobutyric aciduria;3-Methylcrotonyl Coa Carboxylase Deficiency Type I;3-Methylglutaconic Aciduria Type I;3-Methylglutaconic Aciduria Type III;3-Methylglutaconic Aciduria Type IV;Beta-Ketothiolase Deficiency;Isobutyryl-coa dehydrogenase deficiency;Total 17 pathways, visit the HMDB page for details
Uses & manufacturing
Use Classification
Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
Flavoring Agents -> JECFA Flavorings Index
Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
Applications
OccurrenceReported found in banana, bread, blue and provolone cheeses, asparagus, beer and cocoa
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers50 total
Additional notes
DefinitionChEBI: A 2-oxo monocarboxylic acid that is the 2-oxo derivative of isovaleric acid.
Related reactions
Linked notes
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