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2-Methylbutanoic Acid

HCID 178917084
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Basic information

CAS
352431-44-8
Standard SMILES
CCC(C)C(=O)O
InChIKey
WLAMNBDJUVNPJU-UHFFFAOYSA-N
Molecular formula
C5H10O2
Average molar mass
102.13 g/mol

Overview

2-methylbutyric acid is a methylbutyric acid comprising a butyric acid core carrying a 2-methyl substituent. Produced from amino acid leucine during nutrient starvation in bacteria. It has a role as a bacterial metabolite and a human metabolite. It is a conjugate acid of a 2-methylbutyrate.

Names & identifiers

Preferred name
2-Methylbutanoic Acid
IUPAC
2-methylbutanoic acid
English name
2-Methylbutyric-d9 acid
Molecular formula
C5H10O2
Molecular weight
102.13

Names & synonyms

2-Methylbutanoic acid116-53-02-METHYLBUTYRIC ACIDDL-2-Methylbutyric acidButanoic acid, 2-methyl-Ethylmethylacetic acidMethylethylacetic acid2-Methybutyric acidalpha-Methylbutyric acidFEMA No. 2695DTXSID5021621PX7ZNN5GXK
Show more names
2-Methylbutyric-d9 acid(±)-2-Methylbutyric-d9 AcidD9- (±)-2-Methylbutyric Acid2H9]- (±)-2-Methylbutyric Acid(±)-2-Methylbutyric-D9 Acid (Standard)
NSC-7304DTXCID301621CHEBI:37070RefChem:910087204-145-2209-982-7Methylbutyric acid2-Methyl butyric acid

Database identifiers

CAS
352431-44-8
ChEMBL
CHEMBL1160012
ChEBI
CHEBI:37070
UNII
PX7ZNN5GXK
EC Number
204-145-2、209-982-7
Nikkaji
J2.000A

Properties

Computed structural properties

XLogP
1.2
Topological polar surface area
37.3 Ų
Hydrogen bond donors
1
Hydrogen bond acceptors
2
Rotatable bonds
2
Heavy atoms
7
Formal charge
0
Complexity
68.5

Experimental & physicochemical properties

DrugsPharmaceuticals
LipidsFatty Acyls [FA] -> Fatty Acids and Conjugates [FA01] -> Branched fatty acids [FA0102]
FragrancesFragrance Ingredient (2-Methylbutyric acid) -> IFRA transparency List
LogP · 2 items

1.18

1.18

Food AdditivesFLAVORING AGENT OR ADJUVANT -> FDA Substance added to food
Density0.932-0.936
Flavoring AgentsEU Flavoring substances
Solubility · 2 items

45 mg/mL at 20 °C

1 ml in 1 ml 95% alcohol (in ethanol)

Boiling Point · 2 items

176.00 to 177.00 °C. @ 760.00 mm Hg

176 °C

Refractive Index1.404-1.408

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

GHS classification

GHS Classification · 6 items

This chemical does not meet GHS hazard criteria for < 0.1% (1 of 1864) of reports.

Danger

H302 (99.8%): Harmful if swallowed [Warning Acute toxicity, oral]

P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 1864 reports by companies from 20 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Danger

Hazard information

Regulatory Information · 5 items

Chemical: Butanoic acid, 2-methyl-

Regulation (EC) No 1831/2003 (amended)

Butanoic acid, 2-methyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Butanoic acid, 2-methyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 24-11-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/24166

2-Methylbutyric acid: Does not have an individual approval but may be used under an appropriate group standard

Hazard Classes and Categories · 2 items

Met. Corr. 1 (100%)

Acute Tox. 4 (99.8%)

Chemistry & industry

Pharmacology

Cellular LocationsExtracellular

Uses & manufacturing

U.S. Production2023: 1,000,000 - <8,500,000 lb
Industry UsesSolvent
Use Classification · 3 items

Fragrance Ingredients

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes

Flavoring Agents -> JECFA Flavorings Index

General Manufacturing Information · 2 items

Agriculture, Forestry, Fishing and Hunting

Butanoic acid, 2-methyl-: ACTIVE

Applications · 1 item

Uses2-(Methyl-d3)-butanoic-2,3,3,4,4,4-d6 Acid is labelled DL-2-Methylbutyric Acid (M294865) which is a common chemical reagent used in the synthesis of anticancer naphthoquinione aliphatic amides. Also used in the synthesis of novel erythromycins.

Related reactions

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Compound notes

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Physical Description · 3 items

Liquid

Solid

colourless to pale yellow liquid

Collision Cross Section123.6 Ų [M-H]- [CCS Type: DT; Buffer gas: N2; Ionization: ESI-; Dataset: TOXCAST; Source Identifier: DTXSID5021621]

Physicochemical properties

solubility
Chloroform (Slightly), Ethanol (Slightly), Methanol (Slightly)
form
Oil
color
Colourless
Stability
Hygroscopic