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K401

Sigma-Aldrich

2-Ketobutyric acid

97%

Synonym(s):

2-Oxobutanoic acid, 2-Oxobutyric acid, α-Ketobutyric acid, Propionylformic acid

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About This Item

Linear Formula:
CH3CH2COCOOH
CAS Number:
600-18-0
Molecular Weight:
102.09
Beilstein:
1700514
EC Number:
209-986-9
MDL number:
MFCD00004164
UNSPSC Code:
12352100
PubChem Substance ID:
24896237
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

100

Assay

97%

form

liquid

bp

84 °C/20 mmHg (lit.)

mp

30-34 °C (lit.)

storage temp.

2-8°C

SMILES string

CCC(=O)C(O)=O

InChI

1S/C4H6O3/c1-2-3(5)4(6)7/h2H2,1H3,(H,6,7)

InChI key

TYEYBOSBBBHJIV-UHFFFAOYSA-N

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General description

2-Ketobutyric acid, also known as alpha-ketobutyrateor 2-oxobutyrate, belongs to the category of short-chain keto acids andderivatives with alkyl chains containing less than 6 carbon atoms. [1]

Application

2-Ketobutyric acid can be used as a reactant to synthesize:
  • (S)-2-Aminobutyric acid via enzyme-catalyzed amination reaction[2].
  • L-Isoleucine by living cell reaction in the presence of ethanol[3].
  • 3-Ethyl-2-quinoxalinol from 1,2-diaminobenzene in the presence of sulfuric acid[4].
  • 3-Ethylbenzo[g]quinoxalin-2(1H)-one using 2,3-diaminonaphthalene in the presence of biocatalyst[5].

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Product No.
Description
Pricing

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

179.6 °F - closed cup

Flash Point(C)

82 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM9057
WXBF5150V
WXBF3807V
WXBF3806V
WXBF3288V

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Fabrication of a microcapsule extinguishing agent with a core-shell structure for lithium-ion battery fire safety
Zhang W, et al.
Materials Advances, 2, 4634-4642 (2021)
Synthesis of potential chemotherapic quinoxalinone derivatives by biocatalysis or microwave-assisted Hinsberg reaction
Gris J, et al.
Tetrahedron Letters, 49, 1053-1056 (2008)
Synthesis of 2-(Quinoxalin-2-ylamino-benzotriazolyl) Pentanedioic Derivatives as Potential Anti-Folate Agents
Briguglio I, et al.
Journal of Heterocyclic Chemistry, 53, 1721-1737 (2016)
Min Chai et al.
Cell reports, 27(12), 3413-3421 (2019-06-20)
Hair plays important roles, ranging from the conservation of body heat to the preservation of psychological well-being. Hair loss or alopecia affects millions worldwide, but methods that can be used to regrow hair are lacking. We report that quiescent (telogen)
Nora Weber et al.
Microbial cell factories, 16(1), 51-51 (2017-03-25)
Saccharomyces cerevisiae (baker's yeast) has great potential as a whole-cell biocatalyst for multistep synthesis of various organic molecules. To date, however, few examples exist in the literature of the successful biosynthetic production of chemical compounds, in yeast, that do not
View All Related Papers

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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