≥98% (HPLC)

PF-1005023, 2-Cyano-3-(1-phenyl-1H-indol-3-yl)-2-propenoic acid
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


≥98% (HPLC)






yellow to tan


DMSO: >20 mg/mL



storage temp.


SMILES string




InChI key


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UK-5099 has been used:
  • as a mitochondrial pyruvate blocker to reduce pyruvate transportation into mitochondria in Roswell park memorial institute (RPMI) 1640 medium for prostatic cancer cell line culture
  • in dimethyl sulfoxide (DMSO) stock, to study the effect of inhibiting pyruvate transport into mitochondria on pro-inflammatory responses in lipopolysaccharide activated macrophages
  • in topical treatment in order to study its effect on hair cycle induction in experimental mice


5, 25 mg in glass bottle

Biochem/physiol Actions

UK-5099 induces lactate generation.
UK-5099 is a potent inhibitor of the mitochondrial pyruvate transporter. In rat heart mitochondria, UK-5099 inhibits pyruvate-dependent O2 consumption with an IC50 of 50 nM.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®Pfizer), a collection of 90 Pfizer-developed drugs and research tools. Click here to learn more.

Other Notes

This compound was developed by Pfizer for Apoptosis & Cell Cycle research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds, visit sigma.com/bsm-pfizer.

To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Legal Information

Sold for research purposes under agreement from Pfizer Inc.
LOPAC is a registered trademark of Sigma-Aldrich Co. LLC
Pfizer is a registered trademark of Pfizer, Inc.


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
A P Halestrap et al.
The Biochemical journal, 223(3), 677-685 (1984-11-01)
The inhibitor of mitochondrial pyruvate transport alpha-cyano-beta-(1-phenylindol-3-yl)-acrylate was used to inhibit progressively pyruvate carboxylation by liver mitochondria from control and glucagon-treated rats. The data showed that, contrary to our previous conclusions [Halestrap (1978) Biochem. J. 172, 389-398], pyruvate transport could...
Oleic acid stimulates glucagon-like peptide-1 release from enteroendocrine cells by modulating cell respiration and glycolysis
Clara R, et al.
Metabolism and Disease, 65(3), 8-17 (2016)
M O Proudlove et al.
The Biochemical journal, 247(2), 441-447 (1987-10-15)
1. Mitochondria isolated from the thermogenic spadices of Arum maculatum and Sauromatum guttatum plants oxidized external NADH, succinate, citrate, malate, 2-oxoglutarate and pyruvate without the need to add exogenous cofactors. 2. Oxidation of substrates was virtually all via the alternative...
Ajit S Divakaruni et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(14), 5422-5427 (2013-03-21)
Facilitated pyruvate transport across the mitochondrial inner membrane is a critical step in carbohydrate, amino acid, and lipid metabolism. We report that clinically relevant concentrations of thiazolidinediones (TZDs), a widely used class of insulin sensitizers, acutely and specifically inhibit mitochondrial...
M S Shearman et al.
The Biochemical journal, 223(3), 673-676 (1984-11-01)
alpha-Cyano-beta-(1-phenylindol-3-yl)acrylate inhibited pyruvate transport into both liver and heart mitochondria approximately linearly with respect to its concentration until 65% inhibition was achieved. The extent of inhibition was dependent on the mitochondrial protein concentration. By extrapolation of plots of inhibition versus...
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