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MK-3207 is a potent and orally bioavailable CGRP receptor antagonist (IC50= 0.12 nM; Ki= 0.024 nM); highly selective versus human AM1, AM2, CTR, and AMY3. IC50 Value: 0.024 nM (Ki, Human CGRP) In common with other CGRP receptor antagonists, MK-3207 displays lower affinity for human CGRP receptors from other species, including canine and rodent. in vitro: MK-3207 is a potent antagonist of the human and rhesus monkey CGRP receptors (K(i) = 0.024 nM). in vivo: MK-3207 produced a concentration-dependent inhibition of dermal vasodilation, with plasma concentrations of 0.8 and 7 nM required to block 50 and 90% of the blood flow increase, respectively. The tritiated analog [3H]MK-3207 was used to study the binding characteristics on the human CGRP receptor. [3H]MK-3207 displayed reversible and saturable binding (K(D) = 0.06 nM), and the off-rate was determined to be 0.012 min(-1), with a t(1/2) value of 59 min. After the first interim analysis, the two lowest MK-3207 doses (2.5, 5 mg) were identified as showing insufficient efficacy. Per the pre-specified adaptive design decision rule, only the 2.5-mg group was discontinued and the five highest doses (5, 10, 20, 50, 100 mg) were continued into the second stage. Clinical trial: MK-3207 for the treatment of acute migraines. Phase 2b
| Molecular Weight | 557.59 |
| CAS Number | 957118-49-9 |
| Solubility (25°C) | DMSO ≥ 100 mg/mL |
| Storage | 2-8°C, sealed |
| Related CGRP Receptor Products |
|---|
| Adrenomedullin (16-31), human
Adrenomedullin (16-31), human is amino acid residues 16-31 fragment of human adrenomedullin (hADM). |
| α-CGRP(human)
α-CGRP(human) is a regulatory neuropeptide of 37 amino acids. |
| Adrenomedullin (AM) (22-52), human
Adrenomedullin (AM) (22-52), human is an adrenomedullin receptor antagonist, and also antagonizes the calcitonin generelated peptide (CGRP) receptor in the hindlimb vascular bed of the cat. |
| Calcitonin Gene Related Peptide (CGRP) II, rat
Calcitonin Gene Related Peptide (CGRP) II, rat, a CGRP receptor activator, is a potent and long-lasting vasodilator. |
| Adrenomedullin (11-50), rat
Adrenomedullin (11-50), rat is the C-terminal fragment (11-50) of rat adrenomedullin. |
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