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I1754

Sigma-Aldrich

Isobutyric acid

99%

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Synonym(s):
2-Methylpropionic acid
Linear Formula:
(CH3)2CHCO2H
CAS Number:
Molecular Weight:
88.11
Beilstein/REAXYS Number:
635770
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

vapor density

3.04 (vs air)

Quality Level

vapor pressure

1.5 mmHg ( 20 °C)

assay

99%

form

liquid

autoignition temp.

824 °F

expl. lim.

10 %

refractive index

n20/D 1.393 (lit.)

bp

153-154 °C (lit.)

mp

−47 °C (lit.)

density

0.95 g/mL at 25 °C (lit.)

SMILES string

CC(C)C(O)=O

InChI

1S/C4H8O2/c1-3(2)4(5)6/h3H,1-2H3,(H,5,6)

InChI key

KQNPFQTWMSNSAP-UHFFFAOYSA-N

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This Item
W222208W22221646935-U
Isobutyric acid 99%

I1754

Isobutyric acid

Isobutyric acid ≥99%, FCC, FG

W222208

Isobutyric acid

Isobutyric acid natural, ≥99%, FCC, FG

W222216

Isobutyric acid

Isobutyric acid analytical standard

46935-U

Isobutyric acid

Quality Level

100

Quality Level

400

Quality Level

400

Quality Level

100

bp

153-154 °C (lit.)

bp

153-154 °C (lit.)

bp

153-154 °C (lit.)

bp

153-154 °C (lit.)

density

0.95 g/mL at 25 °C (lit.)

density

0.95 g/mL at 25 °C (lit.)

density

0.95 g/mL at 25 °C (lit.)

density

0.95 g/mL at 25 °C (lit.)

form

liquid

form

-

form

-

form

-

refractive index

n20/D 1.393 (lit.)

refractive index

n20/D 1.393 (lit.)

refractive index

n20/D 1.393 (lit.)

refractive index

n20/D 1.393 (lit.)

General description

Isobutyric acid is a carboxylic acid used as a building block in the production of active pharmaceutical ingredients (APIs).

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

131.0 °F - closed cup

flash_point_c

55 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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Isobutyric acid natural, ≥99%, FCC, FG

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2-Methylbutyric acid 98%

Sigma-Aldrich

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Isobutyl isobutyrate United States Pharmacopeia (USP) Reference Standard

USP

1347835

Isobutyl isobutyrate

Isobutyric-d7 acid 98 atom % D, 99% (CP)

Sigma-Aldrich

632007

Isobutyric-d7 acid

E M Faed et al.
Clinical and experimental pharmacology & physiology, 5(2), 195-198 (1978-03-01)
1. Two main conjugates of CPIB (2-[chlorophenoxy]-2-methylpropionic acid) are present in the urine of subjects taking clofibrate. The metabolites can be separated by thin-layer chromatography (TLC). 2. Both conjugates are hydrolysed by dilute alkali, but only one is hydrolysed by
A Vyalikh et al.
Physical chemistry chemical physics : PCCP, 9(18), 2249-2257 (2007-05-10)
Solid state deuterium NMR has been used to study the molecular motion of d(6)-isobutyric acid (d(6)-iBA) in the pure (unconfined) state and confined in the cylindrical pores of two periodic mesoporous silica materials (MCM-41, pore size 3.3 nm and SBA-15
Livia H Morais et al.
Current biology : CB, 30(19), 3761-3774 (2020-08-22)
Birth by Caesarean (C)-section impacts early gut microbiota colonization and is associated with an increased risk of developing immune and metabolic disorders. Moreover, alterations of the microbiome have been shown to affect neurodevelopmental trajectories. However, the long-term effects of C-section
Kimberlee S Mix et al.
Molecular pharmacology, 65(2), 309-318 (2004-01-27)
Matrix metalloproteinases (MMPs) degrade extracellular matrix components, and overexpression of these enzymes contributes to tissue destruction in arthritis. Of particular importance are the collagenases, MMP-1 and MMP-13, which have high activity against the interstitial collagens in cartilage. In this study
Julia Biermann et al.
Molecular vision, 17, 395-403 (2011-02-12)
Histone deacetylase inhibitors (HDACi) have neuroprotective effects under various neurodegenerative conditions, e.g., after optic nerve crush (ONC). HDACi-mediated protection of central neurons by increased histone acetylation has not previously been demonstrated in rat retinal ganglion cells (RGCs), although epigenetic changes

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