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Sigma-Aldrich

2-Keto-3-(methyl-13C)-butyric-4-13C acid sodium salt

99 atom % 13C, 97% (CP)

Synonym(s):

α-Keto-3-(methyl-13C)-butyric-4-13C acid sodium, α-Ketoisovaleric acid-13C2 sodium salt, 2-Ketoisovaleric acid-13C2 sodium salt, 3-Methyl-13C-oxobutanoic-4-13C acid sodium salt, Sodium α-ketoisovalerate-3-(methyl-13C),4-13C

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About This Item

Linear Formula:
13CH3CH(13CH3)COCO2Na
CAS Number:
634908-42-2
Molecular Weight:
140.08
MDL number:
MFCD04118127
UNSPSC Code:
12352106
PubChem Substance ID:
24880626
NACRES:
NA.12

isotopic purity

99 atom % 13C

Quality Level

200

Assay

97% (CP)

form

solid

technique(s)

bio NMR: suitable

mp

227-230 °C (lit.)

mass shift

M+2

SMILES string

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

InChI key

WIQBZDCJCRFGKA-AWQJXPNKSA-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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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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