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663980

Sigma-Aldrich

2-Keto-3-methylbutyric acid-13C5 sodium salt

99 atom % 13C

Synonym(s):

α-Keto-3-methylbutyric acid-13C5 sodium, α-Ketoisovaleric acid-13C5 sodium salt, 2-Ketoisovaleric acid-13C5 sodium salt, 3-Methyl-2-oxobutanoic acid-13C5 sodium salt, Sodium α-ketoisovalerate-13C5

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About This Item

Linear Formula:
13CH313CH(13CH3)13CO13CO2Na
CAS Number:
1173018-24-0
Molecular Weight:
143.06
MDL number:
MFCD09842678
UNSPSC Code:
12352106
PubChem Substance ID:
329760252
NACRES:
NA.12

isotopic purity

99 atom % 13C

Quality Level

200

form

solid

technique(s)

bio NMR: suitable

mp

227-230 °C

mass shift

M+5

SMILES string

[Na+].[13CH3][13CH]([13CH3])[13C](=O)[13C]([O-])=O

InChI

1S/C5H8O3.Na/c1-3(2)4(6)5(7)8;/h3H,1-2H3,(H,7,8);/q;+1/p-1/i1+1,2+1,3+1,4+1,5+1;

InChI key

WIQBZDCJCRFGKA-JFGXUQBHSA-M

Packaging

This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MBBC4884
MBBC1649
ST1378

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Articles

Selective Protonation of Methyl Groups in Highly Deuterated Proteins

Sigma-Aldrich presents an article about the selective protonation of methyl groups in highly deuterated proteins. In which the structural NMR studies of small proteins, a maximum number of proton chemical shifts are usually assigned and NOEs connecting large numbers of sites are subsequently quantified in terms of distance restraints that are then used to obtain an ensemble of structures.

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