Pifithrin-α, p-Nitro, Cyclic_product_DataBase

Bioactivity	Pifithrin-α, p-Nitro, Cyclic (PFN-α) is cell-permeable and active-form p53 inhibitor. Pifithrin-α, p-Nitro, Cyclic is one order magnitude more active than Pifithrin-α in protecting cortical neurons exposed to Etoposide (ED50=30 nM). Pifithrin-α, p-Nitro, Cyclic behaves as a p53 posttranscriptional activity inhibitor. Pifithrin-α, p-Nitro, Cyclic do not prevent p53 phosphorylation on the S15 residue[1][2].
Invitro	Pifithrin-α, p-Nitro, Cyclic (PFN-α) efficiently blocks p53-triggered cell death and p21/WAF1 expression in cortical neurons exposed to etoposide at concentrations one order magnitude lower than that in PFT-α[1].
In Vivo	Intraocular injection of pifithrin-α slightly increases survival of retinal ganglion cell (RGC) at the concentration of 6 μM but not at 0.06 μM. Pifithrin-α, p-Nitro, Cyclic (PFN-α) is not effective in vivo, even at 6 μM[1].Pifithrin-α, p-Nitro, Cyclic shows the half-life (t1/2) of 6 hours (when incubated in biological conditions)[1].
Name	Pifithrin-α, p-Nitro, Cyclic
CAS	60477-38-5
Formula	C15H13N3O2S
Molar Mass	299.35
Appearance	Solid
Transport	Room temperature in continental US; may vary elsewhere.
Storage	-20°C, stored under nitrogen *In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)
Reference	[1]. Pietrancosta N, et al. Imino-tetrahydro-benzothiazole derivatives as p53 inhibitors: discovery of a highly potent in vivo inhibitor and its action mechanism. J Med Chem. 2006 Jun 15;49(12):3645-52. [2]. Dinca EB, et al. p53 Small-molecule inhibitor enhances temozolomide cytotoxic activity against intracranial glioblastoma xenografts. Cancer Res. 2008 Dec 15;68(24):10034-9.

PeptideDB

Pifithrin-α, p-Nitro, Cyclic

CAS: 60477-38-5 F: C15H13N3O2S W: 299.35