SML2306

CTEP

≥98% (HPLC)

• Synonym(s): 2-Chloro-4-((2,5-dimethyl-1-(4-(trifluoromethoxy)phenyl)-1H-imidazol-4-yl)ethynyl)pyridine, 2-Chloro-4-[2-[2,5-dimethyl-1-[4-(trifluoromethoxy)phenyl]-1H-imidazol-4-yl]ethynyl]pyridine, RO4956371
• Empirical Formula (Hill Notation): C₁₉H₁₃ClF₃N₃O
• CAS Number: 871362-31-1
• Molecular Weight: 391.77
• MDL number: MFCD22665726
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Assay: ≥98% (HPLC)
• form: powder
• color: white to beige
• solubility: DMSO: 2 mg/mL, clear
• storage temp.: 2-8°C
• SMILES string: CC1=C(C#CC2=CC(Cl)=NC=C2)N=C(C)N1C3=CC=C(OC(F)(F)F)C=C3
• InChI: 1S/C19H13ClF3N3O/c1-12-17(8-3-14-9-10-24-18(20)11-14)25-13(2)26(12)15-4-6-16(7-5-15)27-19(21,22)23/h4-7,9-11H,1-2H3
• InChI key: GOHCTCOGYKAJLZ-UHFFFAOYSA-N

Description

Biochem/physiol Actions

Brain-penetrant, orally active, potent and selective mGluR5 (mGlu5) negative allosteric modulator & inverse agonist.

CTEP (RO4956371) may be used as a therapeutic to reduce hippocampal long-term depression, protein synthesis, and audiogenic seizures in the fragile X mental retardation 1 (Fmr1) knockout mouse.

CTEP is a high-affinity, orally active, potent and selective metabotropic glutamate receptor 5 (mGlu5 or mGluR5) negative allosteric modulator (NAM) and inverse agonist (human/mouse/rat mGlu5 Kd = 1.7/1.8/1.5 nM; IC50 against quisqualate stimulation = 6.4/16.8/8/8 by IP accumulation or 11.4/42/4/6.9 by Ca²⁺ mobilization using human/mouse/rat mGlu5 HEK293 transfectants; IC50 = 40.1 nM against constitutive IP level in human mGlu5 HEK293) with >1000-fold selectivity over 103 molecular targets, including all known mGluRs. CTEP is an excellent tool compound for long-term in vivo studies (in mice and rats) with good pharmacokinetic properties (B/P ratio = 2.6, oral bioavailability ~100%, T1/2 ~18 hrs post 4.5 mg/kg p.o. in mice) and reported to display 30- to 100-fold higher in vivo potency than MPEP and fenobam in two rodent behavioral models sensitive to antianxiety drugs.

Safety Information

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