5.06045

GPR55 Receptor Antagonist, CID16020046

• Synonym(s): GPR55 Receptor Antagonist, CID16020046, 4-[4-(3-Hydroxyphenyl)-3-(4-methylphenyl)-6-oxo-1H,4H-pyrrolo[3,4-c]pyrazol-5-yl]benzoic Acid
• Empirical Formula (Hill Notation): C₂₅H₁₉N₃O₄
• CAS Number: 834903-43-4
• Molecular Weight: 425.44
• UNSPSC Code: 12352200
• PubChem Substance ID: 16020046
• NACRES: NA.77

Properties

• Assay: ≥99% (HPLC)
• Quality Level: 100
• form: powder
• potency: 1 μM IC₅₀
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: off-white
• solubility: DMSO: 100 mg/mL
• storage temp.: 2-8°C
• SMILES string: CC1=CC=C(C=C1)C2=NNC3=C2C(N(C3=O)C4=CC=C(C=C4)C(=O)O)C5=CC(=CC=C5)O

Description

General description

A selective antagonist of G protein-coupled receptor 55 (GPR55) that blocks lipid L-a-lysophosphatidylinositol (LPI, Cat. No. 440153)-induced GPR55 activation (IC₅₀ = 1 µM) and downstream effects in HEK293 cells. Also shown to block the agonistic effect of LPI on GPR55- expressing yeast cells (~10 µM). Inhibits LPI-induced Ca2+ mobilization and ERK1/2 phosphorylation in HEK-GPR55 and HEK-CB1 cells. However, it does not affect basal Ca2+ mobilization and ERK1/2 activity. Blocks the GPR55-mediated NFAT and NF-kB activation and their nuclear translocation in HEK-GPR55 cells. Diminishes LPI-induced wound healing in GPR55-expressing primary human lung microvascular endothelial cells and reverses LPI-inhibited platelet aggregation (~10 µM). Also reported to inhibit the activity of phosphodiesterases PDE3A and PDE4B (pIC₅₀ = 5 and 4.8, respectively).

Biochem/physiol Actions

Primary Target
GPR55

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Kargl, J., et al, 2013. J. Pharmacol. Exp. Ther.346, 54.

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