| Bioactivity | Telcagepant (MK-0974) is an orally active calcitonin gene-related peptide (CGRP) receptor antagonist with Kis of 0.77 nM and 1.2 nM for human and rhesus CGRP receptors, respectively. | ||||||||||||
| Target | Ki: 0.77 nM (human CGRP), 1.2 nM (rhesus CGRP) | ||||||||||||
| Invitro | Telcagepant (MK-0974) displays affinity (Ki) for the canine and rat receptors, with values of 1204 nM and 1192 nM (n=10), respectively. Telcagepant (MK-0974) potently blocks human α-CGRP-stimulated cAMP responses in human CGRP receptor expressing HEK293 cells with an IC50 of 2.2 nM[1]. Telcagepant (MK-0974) displays saturable binding to SK-N-MC membranes with a KD of 1.9 nM and Bmax of 479 fmol/mg protein. Telcagepant (MK-0974) also displays saturable binding to rhesus cerebellum homogenate with a KD of 1.3 nM and Bmax of 20 fmol/mg[2]. | ||||||||||||
| In Vivo | Telcagepant (MK-0974) (i.v. bolus, 1 mg/kg) demonstrates that the efficacy of this antagonist is time-dependent and correlated with plasma levels[1]. The pharmacokinetics of Telcagepant (MK-0974) remains linear across 0.5-10 mg/kg intravenous dose in monkeys, but the oral area under the plasma concentration-time curve (AUC) increase (5-30 mg/kg) is 15-fold over dose-proportional[3]. | ||||||||||||
| Name | Telcagepant | ||||||||||||
| CAS | 781649-09-0 | ||||||||||||
| Formula | C26H27F5N6O3 | ||||||||||||
| Molar Mass | 566.52 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Salvatore CA, et al. Pharmacological characterization of MK-0974 [N-[(3R,6S)-6-(2,3-difluorophenyl)-2-oxo-1-(2,2,2-trifluoroethyl)azepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxamide], a potent and orally active calcito [2]. Moore EL, et al. Examining the binding properties of MK-0974: a CGRP receptor antagonist for the acute treatment of migraine. Eur J Pharmacol. 2009 Jan 14;602(2-3):250-4. [3]. Roller S, et al. Preclinical pharmacokinetics of MK-0974, an orally active calcitonin-gene related peptide (CGRP)-receptor antagonist, mechanism of dose dependency and species differences. Xenobiotica. 2009 Jan;39(1):33-45. |
Telcagepant
CAS: 781649-09-0 F: C26H27F5N6O3 W: 566.52
Telcagepant (MK-0974) is an orally active calcitonin gene-related peptide (CGRP) receptor antagonist with Kis of 0.77 nM
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