Date published: 2026-5-27

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PYR 41 (CAS 418805-02-4)

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Alternate Names:
4-(4-(5-Nitro-furan-2-ylmethylene)-3,5-dioxo-pyrazolidin-1-yl)-benzoic acid ethyl ester
Application:
PYR 41 is an irreversible and cell-permeable ubiquitin-activating enzyme (E1) inhibitor
CAS Number:
418805-02-4
Molecular Weight:
371.30
Molecular Formula:
C17H13N3O7
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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PYR 41 is an irreversible and cell-permeable UBE1 (ubiquitin-activating enzyme E1) inhibitor.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

PYR 41, 5 mg

sc-362786
5 mg
$73.00

PYR 41, 25 mg

sc-362786A
25 mg
$156.00