P0122
Pifithrin-μ
≥97% (HPLC), solid
Synonym(s):
2-Phenylethynesulfonamide, PFTμ
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About This Item
Empirical Formula (Hill Notation):
C8H7NO2S
CAS Number:
Molecular Weight:
181.21
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77
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Quality Level
Assay
≥97% (HPLC)
form
solid
storage condition
desiccated
solubility
DMSO: soluble >10 mg/mL, clear
H2O: insoluble
storage temp.
2-8°C
SMILES string
NS(=O)(=O)C#Cc1ccccc1
InChI
1S/C8H7NO2S/c9-12(10,11)7-6-8-4-2-1-3-5-8/h1-5H,(H2,9,10,11)
InChI key
ZZUZYEMRHCMVTB-UHFFFAOYSA-N
Application
Pifithrin-μ has been used:
- to treat microglial cell line to analyse its neuroprotective effect on M1-like and M2-like phenotype
- as heat shock protein (HSP)-70 inhibitor, to treat transfected Marc-145 cells
- to inhibit heat shock cognate 70 (Hsc70) to elucidate heat shock chaperones mouse embryonic stem cells
Biochem/physiol Actions
Pifithrin-μ is an inhibitor of p53 binding and anti-apoptotic, which directly inhibits p53 binding to mitochondria as well as to Bcl-xL and Bcl-2 proteins. PFTμ rescues cells from lethal γ-irradiation-induced cell death. Because pifithrin-μ shuts down only the p53-mitochondrial pathway without affecting the transcriptional functions of p53, it is superior to pifithrin-α.
Pifithrin-μ(PFT-μ) has neuroprotective capabilities against cell death in a preclinical model of hypoxia-ischemia (HI)-induced neonatal encephalopathy. It inhibits nuclear factor-ΙB (NF-ΙB) pathway by inhibiting the interaction of molecular chaperone heat shock protein (HSP)-70 with its substrates.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Tomoya Uchimura et al.
Frontiers in endocrinology, 10, 529-529 (2019-08-21)
Medaka (Oryzias latipes) are teleost fish with a XX/XY sex determination system. Recently, it was reported that high temperature (HT) induced the masculinization of XX medaka by increasing the levels of cortisol, a major glucocorticoid produced by interrenal cells in
The anti-inflammatory effects of the small molecule pifithrin-mu on BV2 microglia
Fleiss B, et al.
Developmental Neuroscience, 37(4-5), 363-375 (2015)
Femke M Feringa et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 43(3), 347-358 (2022-12-15)
The presynaptic proteins MUNC18-1, syntaxin-1, and SNAP25 drive SNARE-mediated synaptic vesicle fusion and are also required for neuronal viability. Their absence triggers rapid, cell-autonomous, neuron-specific degeneration, unrelated to synaptic vesicle deficits. The underlying cell death pathways remain poorly understood. Here
Ramon D Jones et al.
Molecular biology of the cell, 31(3), 221-233 (2019-12-12)
Protein misfolding is a recurring phenomenon that cells must manage; otherwise misfolded proteins can aggregate and become toxic should they persist. To counter this burden, cells have evolved protein quality control (PQC) mechanisms that manage misfolded proteins. Two classes of
Tomohisa Horibe et al.
Molecular cancer, 11, 59-59 (2012-08-24)
Heat-shock protein 90 (Hsp90) is vital to cell survival under conditions of stress, and binds client proteins to assist in protein stabilization, translocation of polypeptides across cell membranes, and recovery of proteins from aggregates. Therefore, Hsp90 has emerged as an
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