W297003

Sigma-Aldrich

Pyruvic acid

≥97%, FG

Synonym(s):
2-Oxopropionic acid, α-Ketopropionic acid
Linear Formula:
CH3COCOOH
CAS Number:
Molecular Weight:
88.06
FEMA Number:
2970
Beilstein/REAXYS Number:
506211
EC Number:
Council of Europe no.:
19
MDL number:
eCl@ss:
39021320
PubChem Substance ID:
Flavis number:
8.019
NACRES:
NA.21
Pricing and availability is not currently available.

Quality Level

biological source

synthetic

grade

FG
Kosher

Agency/Method

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FDA 21 CFR 172.515

assay

≥97%

refractive index

n20/D 1.428 (lit.)

bp

165 °C (lit.)

mp

11-12 °C (lit.)

density

1.267 g/mL at 25 °C (lit.)

Documentation

see Safety & Documentation for available documents

Featured Industry

Flavors and Fragrances

Organoleptic

caramel; acidic; sour

food allergen

no known allergens

fragrance allergen

no known allergens

storage temp.

2-8°C

SMILES string

CC(=O)C(O)=O

InChI

1S/C3H4O3/c1-2(4)3(5)6/h1H3,(H,5,6)

InChI key

LCTONWCANYUPML-UHFFFAOYSA-N

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General description

Pyruvic acid is the key component formed during the hydrolysis of flavor-precursors called S-alk(en)yl-L-cysteine-sulfoxides in onion tissues by allinase during maceration or chopping. The amount of pyruvic acid formed is used as a measure for onion pungency.
Natural occurrence: Asparagus, beef, sake, Virginia tobacco, wheat bread.

Packaging

25 kg in composite drum
250 g in glass bottle
1 kg in glass bottle
5 kg in poly drum

Biochem/physiol Actions

Taste at 5 ppm

Other Notes

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Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN 3265 8 / PGII

WGK Germany

WGK 3

Onion flavor and odor, enzymatic development of pyruvic acid in onion as a measure of pungency.
Schwimmer S & Weston WJ
Journal of Agricultural and Food Chemistry, 9(4), 301-304 (1961)
Development of an automated system for pyruvic acid analysis in onion breeding.
Yoo KS & Pike LM.
Sci. Hortic., 82(3), 193-201 (1999)
A simplified pyruvic acid analysis suitable for onion breeding programs.
Yoo KS, et al.
Hortscience: a Publication of the American Society For Horticultural Science Hortscience, 30(6), 1306-1306 (1995)
Robert A Jacobs et al.
American journal of physiology. Endocrinology and metabolism, 304(7), E686-E694 (2013-02-07)
Lactate is an important intermediate metabolite in human bioenergetics and is oxidized in many different tissues including the heart, brain, kidney, adipose tissue, liver, and skeletal muscle. The mechanism(s) explaining the metabolism of lactate in these tissues, however, remains unclear....
Hannes Link et al.
Nature biotechnology, 31(4), 357-361 (2013-03-05)
Recent data suggest that the majority of proteins bind specific metabolites and that such interactions are relevant to metabolic and gene regulation. However, there are no methods to systematically identify functional allosteric protein-metabolite interactions. Here we present an experimental and...
Protocols
Separation of Pyruvic acid, United States Pharmacopeia (USP) Reference Standard; Tartaric acid, United States Pharmacopeia (USP) Reference Standard; Citric acid, United States Pharmacopeia (USP) Reference Standard; Malic acid, United States Pharmacopeia (USP) Reference Standard; L-Pyroglutamic acid, ≥99.0% (T); Lactic acid, United States Pharmacopeia (USP) Reference Standard; Acetic acid, ≥99.99% trace metals basis; Succinic acid, United States Pharmacopeia (USP) Reference Standard
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