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SML2306

Sigma-Aldrich

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

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About This Item

Empirical Formula (Hill Notation):
C19H13ClF3N3O
CAS Number:
871362-31-1
Molecular Weight:
391.77
MDL number:
MFCD22665726
UNSPSC Code:
12352200
NACRES:
NA.77

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

Biochem/physiol Actions

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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Aubin Michalon et al.
Neuron, 74(1), 49-56 (2012-04-17)
Fragile X syndrome (FXS) is the most common form of inherited intellectual disability. Previous studies have implicated mGlu5 in the pathogenesis of the disease, but a crucial unanswered question is whether pharmacological mGlu5 inhibition is able to reverse an already
Alison Hamilton et al.
Cell reports, 15(9), 1859-1865 (2016-05-24)
Beta-amyloid (Aβ) oligomers contribute to the pathophysiology of Alzheimer disease (AD), and metabotropic glutamate receptor 5 (mGluR5) has been shown to act as a receptor for both Aβ oligomers and cellular prion proteins. Furthermore, the genetic deletion of mGluR5 in
Di Tian et al.
Nature neuroscience, 18(2), 182-184 (2015-01-13)
Human chromosome 16p11.2 microdeletion is the most common gene copy number variation in autism, but the synaptic pathophysiology caused by this mutation is largely unknown. Using a mouse with the same genetic deficiency, we found that metabotropic glutamate receptor 5
Jifang Tao et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 36(47), 11946-11958 (2016-11-25)
Rett syndrome (RTT) is caused by mutations in the gene encoding methyl-CpG binding protein 2 (MECP2), an epigenetic regulator of mRNA transcription. Here, we report a test of the hypothesis of shared pathophysiology of RTT and fragile X, another monogenic
Michael S Sidorov et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(41), 12852-12857 (2015-09-30)
A feature of early postnatal neocortical development is a transient peak in signaling via metabotropic glutamate receptor 5 (mGluR5). In visual cortex, this change coincides with increased sensitivity of excitatory synapses to monocular deprivation (MD). However, loss of visual responsiveness
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