504651 | PERK Inhibitor II, GSK2656157 - Calbiochem

504651
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      Overview

      Replacement Information

      Key Spec Table

      Empirical Formula
      C₂₃H₂₁FN₆O

      Pricing & Availability

      Catalogue NumberAvailability Packaging Qty/Pack Price Quantity
      5.04651.0001
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      In Stock 
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          Glass bottle 5 mg
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          Description
          OverviewA cell-permeable pyrrolopyrimidinamine compound that acts as a potent, ATP-competitive EIF2AK3/PERK inhibitor (IC50 = 0.9 nM; [ATP] = 10 µM), displaying ≥511-fold selectivity over HRI/EIF2AK1, BRK, PKR/EIF2AK2, and MEKK2 (IC50 = 460, 822, 905, and 954 nM, respectively) and much reduced or little activity toward more than 300 other kinases. Potently prevents ER stress-induced enhancement of PERK and eIF2α phosphorylation as well as ATF4 & CHOP upregulation in human BxPC3 and murine LL/2 cultures in vitro (IC50 ≤30 nM; 1 h drug preincubation prior to 6 h 1 µM Thapsigargin treatment, Cat. No. 586005) and exhibits antitumor efficacy against 3 pancreas and 1 multiple myeloma xenografts in mice (54-110% tumor growth inhibition; 150 mg/kg/12 h via p.o.) in vivo. More selective than GSK2606414 (Cat. No. 516535).
          Catalogue Number504651
          Brand Family Calbiochem®
          SynonymsEIF2AK1 Inhibitor II, EIF2AK2 Inhibitor III, EIF2AK3 Inhibitor II, HRI Inhibitor II, MEKK2 Inhibitor I, PKR Inhibitor III, PKR-like ER Kinase Inhibitor II, BRK Inhibitor II
          References
          ReferencesAtkins, C., et al. 2013. Cancer Res. 73, 1993.
          Product Information
          FormWhite powder
          Hill FormulaC₂₃H₂₁FN₆O
          Chemical formulaC₂₃H₂₁FN₆O
          ReversibleY
          Structure formula Image
          Applications
          ApplicationPERK Inhibitor II, GSK2656157, CAS 1337532-29-2 is a cell-permeable, potent, ATP-competitive inhibitor of PERK/EIF2AK3 (IC50 = 0.9 nM).
          Biological Information
          Primary TargetPERK
          Purity≥98% by HPLC
          Physicochemical Information
          Cell permeableY
          Dimensions
          Materials Information
          Toxicological Information
          Safety Information according to GHS
          Safety Information
          Product Usage Statements
          Storage and Shipping Information
          Ship Code Ambient Temperature Only
          Toxicity Regulatory Review
          Storage -20°C
          Protect from Light Protect from light
          Do not freeze Ok to freeze
          Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
          Packaging Information
          Packaged under inert gas Packaged under inert gas
          Transport Information
          Supplemental Information
          Specifications

          Documentation

          SDS

          Title

          Safety Data Sheet (SDS) 

          References

          Reference overview
          Atkins, C., et al. 2013. Cancer Res. 73, 1993.
          Data Sheet

          Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.

          Revision10-March-2014 JSW
          SynonymsEIF2AK1 Inhibitor II, EIF2AK2 Inhibitor III, EIF2AK3 Inhibitor II, HRI Inhibitor II, MEKK2 Inhibitor I, PKR Inhibitor III, PKR-like ER Kinase Inhibitor II, BRK Inhibitor II
          DescriptionA cell-permeable pyrrolopyrimidinamine compound that acts as a potent, ATP-competitive EIF2AK3/PERK inhibitor (IC50 = 0.9 nM; [ATP] = 10 µM), displaying ≥511-fold selectivity over HRI/EIF2AK1, BRK, PKR/EIF2AK2, and MEKK2 (IC50 = 460, 822, 905, and 954 nM, respectively) and much reduced or little activity toward more than 300 other kinases. While GSK2656157 potently inhibits ER stress-induced enhancement of PERK and eIF2α phosphorylation as well as ATF4 & CHOP upregulation in human PxBC3 and murine LL/2 cultures in vitro (IC50 ≤30 nM; 1 h drug preincubation prior to 6 h ER-stress induction by 1 µM Thapsigargin, Cat. No. 586005), only basal PERK phosphorylation, but not basal eIF2α phosphorylation or ATF4 & CHOP expression, is seen inhibited in pancreas (by >95% up to 8 h post single 50 mg/kg oral dose) and tumor tissues upon GSK2656157 administration in mice in vivo, resulting in the observed antitumor efficacy (54-110% tumor growth inhibition; 150 mg/kg/12 h via p.o.) and reversible pancreas damage (44% and 95% of control pancreas mass, respectively, 1 d and 15 d post 14 d 150 mg/kg/12 h oral dosing). Comparing to its structural analog GSK2606414 (Cat. No. 516535), GSK2656157 exhibits much reduced potency toward Aurora B, MLK2/MAP3K10, MLCK2/MYLK2, c-MER (IC50 = 1.259, 2.796, 3.039, and 3.431 µM, respectively), c-Kit, and DDR2 (69.84% and 25.41% inhibition, respectively, at 10 µM)
          FormWhite powder
          Intert gas (Yes/No) Packaged under inert gas
          Chemical formulaC₂₃H₂₁FN₆O
          Structure formula
          Purity≥98% by HPLC
          SolubilityDMSO (100 mg/ml). Use only fresh DMSO for reconstitution.
          Storage -20°C
          Protect from light
          Do Not Freeze Ok to freeze
          Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
          Toxicity Regulatory Review
          ReferencesAtkins, C., et al. 2013. Cancer Res. 73, 1993.