Date published: 2026-6-5

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3,3-Difluoro-1,1,2,3-tetrachloropropene (CAS 431-50-5)

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CAS Number:
431-50-5
Molecular Weight:
215.84
Molecular Formula:
C3Cl4F2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Clasto-Lactacystin beta-Lactone is the beta-lactone active form of the Streptomyces antibiotic lactacystin, a widely employed inhibitor of the 20S proteasome. Hydrolysis of lactacystin releases N-acetyl-L-cysteine and reveals the inactive clasto-Lactacystin dihydroxy carboxylic acid, which then cyclizes to form the active beta-lactone species. Clasto-Lactacystin beta-Lactone is thought to be the primary compound that interacts with the proteasome, as conditions stabilizing to lactacystin that prevent accumulation of the beta-lactone also display diminished inhibition of the proteasome. Clasto-Lactacystin β-Lactone is an inhibitor of cathepsin A.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

3,3-Difluoro-1,1,2,3-tetrachloropropene, 5 g

sc-313575
5 g
$146.00

3,3-Difluoro-1,1,2,3-tetrachloropropene, 25 g

sc-313575A
25 g
$584.00