EU/US Properties Organoleptics Cosmetics Suppliers Safety Safety in use Safety references References Other Blenders Uses Occurrence Synonyms Articles Notes

(R)-2-methyl butyric acid
butanoic acid, 2-methyl-, (R)-

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CAS Number: 32231-50-8Picture of molecule3D/inchi
FDA UNII: Search
Nikkaji Web:J57.315I
XlogP3:1.20 (est)
Molecular Weight:102.13310000
Formula:C5 H10 O2
BioActivity Summary:listing
NMR Predictor:Predict (works with chrome, Edge or firefox)
Category:information only not used for fragrances or flavors
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
Physical Properties:
Food Chemicals Codex Listed: No
Flash Point: 32.00 °F. TCC ( 0.00 °C. ) (est)
Soluble in:
 water, 2.811e+004 mg/L @ 25 °C (est)
Organoleptic Properties:
Odor Type: cheesy
cheesy sweaty
Odor Description:cheesy sweaty
Odor and/or flavor descriptions from others (if found).
Cosmetic Information:
None found
BOC Sciences
For experimental / research use only.
(R)-(-)-2-Methylbutyric acid
For experimental / research use only.
(R)-2-Methylbutyric acid
Safety Information:
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Safety in Use Information:
information only not used for fragrances or flavors
Recommendation for (R)-2-methyl butyric acid usage levels up to:
 not for fragrance use.
Recommendation for (R)-2-methyl butyric acid flavor usage levels up to:
 not for flavor use.
Safety References:
EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :6950479
National Institute of Allergy and Infectious Diseases:Data
(2R)-2-methylbutanoic acid
Leffingwell:Chirality or Article
 (2R)-2-methylbutanoic acid
NIST Chemistry WebBook:Search Inchi
Pubchem (cid):6950479
Pubchem (sid):43558513
Other Information:
(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
HMDB (The Human Metabolome Database):Search
Potential Blenders and core components note
None Found
Potential Uses:
None Found
Occurrence (nature, food, other):note
 not found in nature
 butanoic acid, 2-methyl-, (R)-
(R)-2-methyl butanoic acid
(2R)-2-methylbutanoic acid
(R)-2-methylbutanoic acid
(R)-2-methylbutyric acid


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PubMed:Biodegradation of C5-C 8 fatty acids and production of aroma volatiles by Myroides sp. ZB35 isolated from activated sludge.
PubMed:Study on pharmacokinetics and tissue distribution of pteryxin in mice by ultra-pressure liquid chromatography with tandem mass spectrometry.
PubMed:Pivalic acid acts as a starter unit in a fatty acid and antibiotic biosynthetic pathway in Alicyclobacillus, Rhodococcus and Streptomyces.
PubMed:Stereoselective biocatalytic synthesis of (S)-2-hydroxy-2-methylbutyric acid via substrate engineering by using "thio-disguised" precursors and oxynitrilase catalysis.
PubMed:Absolute configuration of the creatonotines and callimorphines, two classes of arctiid-specific pyrrolizidine alkaloids.
PubMed:Requirements for the formation of a chiral template.
PubMed:Chiral templating of surfaces: adsorption of (S)-2-methylbutanoic acid on Pt(111) single-crystal surfaces.
PubMed:Asymmetric oxidation by Gluconobacter oxydans.
PubMed:Enantiomers of cis-constrained and flexible 2-substituted GABA analogues exert opposite effects at recombinant GABA(C) receptors.
PubMed:Stable isotope dilution analysis of wine fermentation products by HS-SPME-GC-MS.
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PubMed:Role of alpha-methylacyl coenzyme A racemase in the degradation of methyl-branched alkanes by Mycobacterium sp. strain P101.
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PubMed:Enantioselective analysis of methyl-branched alcohols and acids in rhubarb (Rheum rhabarbarum L.) stalks.
PubMed:Metabolism of ethyl tiglate in apple fruits leads to the formation of small amounts of (R)-ethyl 2-methylbutanoate.
PubMed:Simultaneous enantioseparation of flobufen and its diastereomeric metabolites on ULMO, a Pirkle type chiral stationary phase.
PubMed:Enantiomeric synthesis of (S)-2-methylbutanoic acid methyl ester, apple flavor, using lipases in organic solvent.
PubMed:Components of the ether-insoluble resin glycoside-like fraction from Cuscuta chinensis.
PubMed:Separation of the stereoisomers of the main metabolite of a non-steroidal anti-inflammatory drug, flobufen, by chiral high-performance liquid chromatography.
PubMed:Branched-chain fatty acid requirement for avermectin production by a mutant of Streptomyces avermitilis lacking branched-chain 2-oxo acid dehydrogenase activity.
PubMed:Stereoselectivity in the 2-methylbutyrate incorporation into anteiso fatty acids in Bacillus subtilis mutants.
PubMed:Synthesis of stereoisomers of 8-methyl-2-decanol and esters attractive to severalDiabrotica sp.
PubMed:Use of predator odors as repellents to reduce feeding damage by herbivores : I. Snowshoe hares (Lepus americanus).
PubMed:Stereoselectivity of 1-aminocyclopropanecarboxylate malonyltransferase toward stereoisomers of 1-amino-2-ethylcyclopropanecarboxylic acid.
PubMed:Studies of the glycine metabolism in a patient with D-glyceric acidemia and hyperglycinemia.
PubMed:Demonstration of a new mammalian isoleucine catabolic pathway yielding an Rseries of metabolites.
PubMed:Volatile fatty acid requirements of cellulolytic rumen bacteria.
None found
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