530070

Pristimerin

A cell-permeable plant dienone-phenolic triterpenoid, naturally isolated from tripterygium wilfordii.

• Synonym(s): Pristimerin, Monoacylglycerol Lipase Inhibitor II, Proteasome Inhibitor XV, NF-κB Activation Inhibitor IX, MAGL Inhibitor II
• Empirical Formula (Hill Notation): C₃₀H₄₀O₄
• CAS Number: 1258-84-0
• Molecular Weight: 464.64
• MDL number: MFCD01711331
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Quality Level: 100
• Assay: ≥95% (HPLC)
• form: solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: red
• solubility: DMSO: 10 mg/mL; ethanol: 2.5 mg/mL
• shipped in: ambient
• storage temp.: 2-8°C
• InChI: 1S/C30H40O4/c1-18-19-8-9-22-28(4,20(19)16-21(31)24(18)32)13-15-30(6)23-17-27(3,25(33)34-7)11-10-26(23,2)12-14-29(22,30)5/h8-9,16,23,32H,10-15,17H2,1-7H3/t23-,26-,27-,28+,29-,30+/m1/s1
• InChI key: JFACETXYABVHFD-WXPPGMDDSA-N

Description

General description

A cell-permeable plant dienone-phenolic triterpenoid, naturally isolated from tripterygium wilfordii, whose inhibitory activities against proteasome chymotrypsin subunit (IC₅₀ = 2.2 and 3.0 µM against purified rabbit 20S and human 26S proteasome, respectively) and cellular NF-κB pathway/IKK activation most likely account for its reported anticancer efficacy both in vitro (IC₅₀ ≤610 nM in A549, K562, KBM5, MCF-7, MDA-MB-231, HepG2, and primary human leukemia cell cultures) and in mice in vivo (1 to 2.5 mg/kg/day, s.c.), including imatinib/STI571-resistant cancer cells harboring Bcr-Abl T315I mutation. Also reported to inhibit the activity of monoacylglycerol lipase (MGL), the enzyme that hydrolyzes and deactivates the cannabionoid receptor ligand 2-Arachidonoyl-sn-glycerol (2-AG), in a reversible manner with high potency (IC₅₀ = 93 nM).

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Other Notes

Lu, Z., et al. 2010. Mol. Cancer9, 112.
King, A.R., et al. 2009. Chem. Biol.16, 1045.
Tiedemann, R.E., et al. 2009. Blood113, 4027.
Yang, H., et al. 2008. J. Cell. Biochem.103, 234.
Wu, C.C., et al. 2005. Mol. Cancer Ther.4, 1277.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable