573110

STAT5 Inhibitor III, Pimozide

The STAT5 Inhibitor III, Pimozide, also referenced under CAS 2062-78-4, controls the biological activity of STAT5. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

• Synonym(s): STAT5 Inhibitor III, Pimozide, 1-(1-(4,4-Bis(4-fluorophenyl)butyl)-4-piperidinyl)-1,3-dihydro-2H-benzimidazol-2-one
• Empirical Formula (Hill Notation): C₂₈H₂₉F₂N₃O
• CAS Number: 2062-78-4
• Molecular Weight: 461.55
• MDL number: MFCD00055081
• UNSPSC Code: 12352200

Properties

• Quality Level: 100
• Assay: ≥98% (HPLC)
• form: solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: white
• solubility: DMSO: 50 mg/mL
• shipped in: ambient
• storage temp.: −20°C
• SMILES string: O=C1NC2=CC=CC=C2N1C3CCN(CCCC(C4=CC=C(F)C=C4)C5=CC=C(F)C=C5)CC3
• InChI: 1S/C28H29F2N3O/c29-22-11-7-20(8-12-22)25(21-9-13-23(30)14-10-21)4-3-17-32-18-15-24(16-19-32)33-27-6-2-1-5-26(27)31-28(33)34/h1-2,5-14,24-25H,3-4,15-19H2,(H,31,34)
• InChI key: YVUQSNJEYSNKRX-UHFFFAOYSA-N

Description

General description

A cell-permeable and orally available diphenylbutylpiperidine class of psychotropic drug with antagonistic activity against DAT (dopamine transporter) as well as several postsynaptic receptors, including D₁, D₂, D₃, D₄, α₁-/α₂-adrenergic, and 5-HT_2A receptors. In addition to its antipsychotic property, Pimozide is shown to inhibit the constitutive STAT5 Tyr694 phosphorylation (5 to 10 µM for 3h) and transcription activity (5 µM for 18 h) in Bcr-Abl+ K562 and KU812 cultures, while exhibiting little activity against IFNα-stimulated STAT1 phosphorylation or LIF-stimulated STAT3 phosphorylation in K562 cells (10 µM 1 h pretreatment). The mechanism of STAT5 inhibition is currently unknown and Primozide is reported to exhibit little inhibitory activity against cellular Bcr-Abl autophosphorylation or the kinase activities of Abl1 (Wt & T315I), Hck, Lyn A/B, and Src (≤7%) in cell-free kinase assays. Shown to exhibit selective antiproliferative activity against K562, KU812, and primary bone marrow mononuclear cells from CML patients (by >80%; 10 µM for 48 h), but not peripheral blood mononuclear cells from healthy individuals, due to G0/G1 cell cycle arrest and apoptosis induction.

A cell-permeable and orally available diphenylbutylpiperidine class of psychotropic drug with antagonistic activity against DAT (dopamine transporter) as well as several postsynaptic receptors, including D₁, D₂, D₃, D₄, α₁-/α₂-adrenergic, and 5-HT_2A receptors. In addition to its antipsychotic property, Pimozide is shown to inhibit the constitutive STAT5 Tyr694 phosphorylation (5 to 10 µM for 3h) and transcription activity (5 µM for 18 h) in Bcr-Abl+ K562 and KU812 cultures, while exhibiting little activity against IFNα-stimulated STAT1 phosphorylation or LIF-stimulated STAT3 phosphorylation in K562 cells (10 µM 1 h pretreatment). The mechanism of STAT5 inhibition is currently unknown and Primozide is reported to exhibit little inhibitory activity against cellular Bcr-Abl autophosphorylation or the kinase activities of Abl1 (Wt & T315I), Hck, Lyn A/B, and Src (≤7%) in cell-free kinase assays. Shown to exhibit selective antiproliferative activity against K562, KU812, and primary bone marrow mononuclear cells from CML patients (by >80%; 10 µM for 48 h), but not peripheral blood mononuclear cells from healthy individuals, due to G0/G1 cell cycle arrest and apoptosis induction. Acts as a selective and non-competitive inhibitor of human USP1/UAF1 and USP7 activities (IC₅₀ = 2 and 47 µM, respectively) with no effect on UCH-L1 and UCH-L3 (IC₅₀ >500 µM).

Packaging

Packaged under inert gas

Warning

Toxicity: Regulatory Review (Z)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions ar stable for up to 6 months at -20°C.

Other Notes

Chen, J., et al. 2011. Chem. Biol18, 1390.
Nelson, E.A., et al. 2011. Blood117, 3421.

Legal Information

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

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H302
• Precautionary Statements: P264 - P270 - P301 + P312 - P501
• 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