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506132

Sigma-Aldrich

Pifithrin-α

≥95% (HPLC), solid, p53 inhibitor, Calbiochem®

Synonym(s):

Pifithrin-α, 2-(2-Imino-4,5,6,7-tetrahydrobenzothiazol-3-yl)-1- p-tolylethanone, HBr

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About This Item

Empirical Formula (Hill Notation):
C16H18N2OS · xHBr
CAS Number:
Molecular Weight:
286.39 (free base basis)
MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77

product name

Pifithrin-α, A cell-permeable chemical inhibitor of p53.

Quality Level

Assay

≥95% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

off-white

solubility

DMSO: 100 mg/mL

shipped in

ambient

storage temp.

−20°C

InChI

1S/C16H18N2OS.BrH/c1-11-6-8-12(9-7-11)14(19)10-18-13-4-2-3-5-15(13)20-16(18)17;/h6-9,17H,2-5,10H2,1H3;1H

InChI key

HAGVCKULCLQGRF-UHFFFAOYSA-N

General description

A cell-permeable chemical inhibitor of p53. Reversibly inhibits p53-dependent transactivation of p53-responsive genes and reversibly blocks p53-mediated apoptosis. Inhibits p53-dependent growth arrest of human diploid fibroblasts in response to DNA damage but has no effect on p53-deficient fibroblasts. Protects normal tissues from the deleterious side effects of chemotherapy. Has been reported to protect neurons against β-amyloid peptide and glutamate-induced apoptosis.
A reversible inhibitor of p53-dependent transactivation of p53-responsive genes and reversibly blocks p53-mediated apoptosis. Inhibits p53-dependent growth arrest of human diploid fibroblasts in response to DNA damage but has no effect on p53-deficient fibroblasts. Protects mice from lethal genotoxic stress associated with anticancer treatment without promoting tumor formation. Has been reported to protect neurons against β-amyloid and glutamate-induced apoptosis.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
PS3
Product does not compete with ATP.
Reversible: yes

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot into cold tubes and freeze (-20°C). Stock solutions in DMSO are stable for 3 months at -20°C. Unstable in aqueous solutions.

Other Notes

Murphy, P.J.M., et al. 2004. J. Biol. Chem.279, 30195.
Culmsee, C., et al. 2001. J. Neurochem.77, 220.
Komarova, E.A., and Gudkov, A.V. 2000. Biochemistry (Mosc.) 65, 41.
Stadler, P., et al. 2000. Strahlenther Onkol. 176, 98.
Ferber, D. 1999. Science 285, 1651.
Jacquemin-Sablon, A. 1999. Bull. Cancer86, 894.
Komarov, P.G., et al. 1999. Science 285, 1733.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

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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We have previously shown that Zinc supplementation triggered ER stress/UPR in cancer cells undergoing treatment by genotoxic agents, reactivated wtp53 in cancer cells harboring mutant p53 (mutp53) and potentiated the activity of wtp53 in those carrying wtp53. In this study
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Thrombocytopenia-absent radius (TAR) syndrome is caused by RBM8A insufficiency. We generated megakaryocyte-specific Rbm8a knockout (Rbm8aKOMK) mice that exhibited marked thrombocytopenia, internal hemorrhage, and splenomegaly, providing evidence that genetic deficiency of Rbm8a causes a disorder of platelet production. Rbm8aKOMK mice accumulated
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Autophagic flux can be measured by determining the declining abundance of autophagic substrates such as sequestosome 1 (SQSTM1, better known as p62), which is sequestered in autophagosomes upon its direct interaction with LC3. However, the total amount of p62 results

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