412512 | IRE1 Inhibitor III, 4μ8C - CAS 14003-96-4 - Calbiochem

412512
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      Overview

      Replacement Information

      Key Specifications Table

      Empirical FormulaCAS #
      C₁₁H₈O₄ 14003-96-4

      Pricing & Availability

      Catalog NumberAvailability Packaging Qty/Pack Price Quantity
      412512-25MG
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          Glass bottle 25 mg
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          Description
          OverviewA cell-permeable coumarin o-hydroxyaldehyde that inhibits IRE1 RNase activity in a time- and dose-dependent manner (IC50 = 550 and 45 nM, respectively, with 0 and 16 min drug preincubation in RNA cleavage assays) by covalently targeting IRE1 Lys907 via Schiff base formation, effectively preventing ER stress-induced site-specific mRNA splicing as well as RIDD (Regulated IRE1-Dependent Degradation) mRNA degradation (IC50 = 6.9 and 4.1 µM, respectively, against Xbp1 splicing and Scara3 degradation) in MEF cultures following Tunicamycin (Cat. No. 654380) treatment. Comparing to STF083010 (Cat. No. 412510), 4μ8C is also shown to inhibit IRE1 autophosphorylation in cell-free assays via Schiff base formation with IRE1 Lys599 in the absence of ADP, however cellular nucleotide prevents 4μ8C from targeting IRE1 Lys599 intracellularly.
          Catalogue Number412512
          Brand Family Calbiochem®
          Synonyms8-Formyl-7-hydroxy-4-methylcoumarin, 7-Hydroxy-4-methyl-2-oxo-2H-chromene-8-carbaldehyde, ER-to-Nucleus Signaling 1 Inhibitor III, Inositol-Reguiring Protein 1 Inhibitor III
          References
          ReferencesCross, B.C.S., et al. 2012. Proc. Natl. acad. Sci. USA 109, E869.
          Product Information
          CAS number14003-96-4
          FormYellow powder
          Hill FormulaC₁₁H₈O₄
          ReversibleY
          Structure formula ImageStructure formula Image
          Applications
          Biological Information
          Primary TargetIRE1
          Purity≥95% 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 Standard Handling
          Storage +2°C to +8°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.
          Packaging Information
          Packaged under inert gas Packaged under inert gas
          Transport Information
          Supplemental Information
          Specifications

          Documentation

          SDS

          Title

          Safety Data Sheet (SDS) 

          Certificates of Analysis

          TitleLot Number
          412512

          References

          Reference overview
          Cross, B.C.S., et al. 2012. Proc. Natl. acad. Sci. USA 109, E869.
          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.

          Revision11-October-2012 JSW
          Synonyms8-Formyl-7-hydroxy-4-methylcoumarin, 7-Hydroxy-4-methyl-2-oxo-2H-chromene-8-carbaldehyde, ER-to-Nucleus Signaling 1 Inhibitor III, Inositol-Reguiring Protein 1 Inhibitor III
          DescriptionA cell-permeable coumarin o-hydroxyaldehyde compound that inhibits IRE1 RNase activity in a time- and dose-dependent manner (IC50 = 550, 230, 180, 100, and 45 nM, respectively, with 0, 2, 4, 8, 16, min drug preincubation in FRET-based RNA cleavage assays) by covalently targeting IRE1 Lys907 via Schiff base formation, effectively preventing ER stress-induced site-specific mRNA splicing as well as RIDD (Regulated IRE1-Dependent Degradation) mRNA degradation (IC50 = 6.9 and 4.1 µM, respectively, against Xbp1 splicing and Scara3 degradation) in MEF cultures following Tunicamycin (Cat. No. 654380) treatment. Also demonstrated to inhibit ER capacity expansion (Effective conc. 32 µM) and amylase secretion (IC50 <2 µM) upon stress induction by Dexamethasone (Cat. No. 265005) treatment in rat AR42J tumoral acinar pancreatic cells. Structural analysis reveals that the reduced water accessibility to Lys907 in IRE1 native conformation accounts for the unusual stability of Lys907 Schiff base formation and forms the basis of selective IRE1 RNase inhibition by 4μ8C and STF083010 (Cat. No. 412510). Although 4μ8C, but not STF083010, is also shown to inhibit IRE1 autophosphorylation by Schiff base formation with IRE1 Lys599 in the absence of ADP, cellular nucleotide prevents 4μ8C from targeting IRE1 Lys599 and inhibiting IRE1 kinase activity intracellularly.
          FormYellow powder
          Intert gas (Yes/No) Packaged under inert gas
          CAS number14003-96-4
          Structure formulaStructure formula
          Purity≥95% by HPLC
          SolubilityDMSO (25 mg/ml)
          Storage +2°C to +8°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.
          Toxicity Standard Handling
          ReferencesCross, B.C.S., et al. 2012. Proc. Natl. acad. Sci. USA 109, E869.