Description
PYR-41 is a ubiquitin-activating enzyme inhibitor (UBE1 inhibitor). PYR-41 blocks ubiquitination reactions but paradoxically leads to the accumulation of high MW ubiquitinated proteins. PYR-41 also mediated cross-linking of specific protein kinases (Bcr-Abl, Jak2) to inhibit their signaling activity. PYR-41 has demonstrated anti-tumor activity in animal studies, partially selective protein cross-linking may represent an alternate approach to affect signal transduction modules and ubiquitin cycle-regulatory proteins for cancer therapy. (Biochem Pharmacol. 2011 Aug 15;82(4):341-9.) (Note: PYR-41 in solution may exist as a mixture of E- and Z- isomers. HPLC may show two peaks depending on conditions).
Product information
CAS Number: 418805-02-4
Molecular Weight: 371.30
Formula: C17H13N3O7
Chemical Name: (Z)-ethyl 4-(4-((5-nitrofuran-2-yl)methylene)-3,5-dioxopyrazolidin-1-yl)benzoate
Smiles: CCOC(=O)C1C=CC(=CC=1)N1NC(=O)/C(=C/C2=CC=C(O2)[N+]([O-])=O)/C1=O
InChiKey: ARGIPZKQJGFSGQ-LCYFTJDESA-N
InChi: InChI=1S/C17H13N3O7/c1-2-26-17(23)10-3-5-11(6-4-10)19-16(22)13(15(21)18-19)9-12-7-8-14(27-12)20(24)25/h3-9H,2H2,1H3,(H,18,21)/b13-9-
Technical Data
Appearance: Solid Power.
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: DMSO up to 100 mM
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥12 months if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined.
HS Tariff Code: 382200
How to use
In Vitro:
PYR-41 was used at 10-50 µM final concentration in various in vitro assays.
References:
- Yang Y, et al. Inhibitors of ubiquitin-activating enzyme (E1), a new class of potential cancer therapeutics. (2007) Cancer Res. 67(19):9472-81.
- Kapuria V, et al. Protein cross-linking as a novel mechanism of action of a ubiquitin-activating enzyme inhibitor with anti-tumor activity. (2011) Biochem Pharmacol. 82(4):341-9.
Products are for research use only. Not for human use.
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