rat m5

Methoctramine is a selective antagonist of M2 muscarinic acetylcholine receptors (IC50 = 6.1 nM in CHO-K1 cell membranes).[1] It is selective for M2 over M1, M3, M4, and M5 receptors (IC50s = 92, 770, 260, and 217 nM, respectively). In vitro, methoctramine inhibits acetylcholine-induced reductions in isolated guinea pig tracheal tube contractions when used at a concentration of 1 μM.[2] In vivo, methoctramine inhibits bradycardia and bronchoconstriction induced by acetylcholinein guinea pigs with ED50 values of 38 and 81 nmol kg, respectively. In a rat model of spinal cord injury, methoctramine suppresses bladder overactivity induced by the non-selective muscarinic acetylcholine receptor agonist oxotremorine M.[3]

RO1138452 (CAY10441) 是一种选择性和可口服的前列环素受体拮抗剂，pKi 为8.3。它拮抗卡前列环素诱导的人神经母细胞瘤腺苷酸环化酶的激活，以剂量依赖性方式阻断环 AMP 积累，具有镇痛活性。

ML380 是一种高效的中枢神经系统渗透剂 M5 正变构调节剂，对人和大鼠 M5 的 EC50值分别为 190 和 610 nM。它对 M1 和 M3 mAChR 亚型具有中等选择性，可增加 Ach 对 M5 mAChR 的亲和力。

Anti-Mouse Thy1 CD90 Antibody (M5 49.4.1) 是一种来源于大鼠的IgG2a抗体抑制剂，针对小鼠Thy1 CD90设计。

VU 6008667 is a selective negative allosteric M5 NAM modulator (IC50s: 1.2 μM and 1.6 μM for human M5 and rat M5, respectively).