Atopaxar (E5555) 是一种高效、有口服活性活性的，选择性的，可逆的凝血酶受体蛋白酶激活受体-1 (PAR-1) 拮抗剂。Atopaxar 是一种抗血小板剂，能干扰血小板信号。Atopaxar 可用于动脉粥样硬化血栓性疾病的研究。
货号:ajcx36106
CAS:751475-53-3
分子式:C29H38FN3O5
分子量：527.63
溶解度:DMSO : 250 mg/mL (473.82 mM; Need ultrasonic)
纯度：98%
存储：Store at -20°C
库存：现货

Background:

Atopaxar (E5555) is a potent, orally active, selective and reversible thrombin receptor protease-activated receptor-1 (PAR-1) antagonist. Atopaxar, an antiplatelet agent, interferes with platelet signaling. Atopaxar can be used for the research of atherothrombotic disease[1][2].

Atopaxar (0.0001-10 μM; 1h) inhibits haTRAP (high-affinity thrombin receptor activating peptide) binding to PAR-1 on human platelet membranes in a concentration-dependent manner, with an IC50 of 0.019 μM[2].Atopaxar inhibits human platelet aggregation induced by thrombin or TRAP in a concentration-dependent manner[2].Atopaxar does not inhibit PRP (platelet-rich plasma) aggregation induced by ADP, U46619, collagen, and PAR-4ap, up to a concentration of 20 μM[2].

Atopaxar (30-100 mg/kg; p.o.) causes a dose-dependent prolongation of the time to occlusion of the femoral artery in photochemically-induced thrombosis (PIT) guinea pigs model[2]. Atopaxar does not prolong bleeding time in guinea pigs at the highest tested dosage of 1000 mg/kg[2].

[1]. Chris Dockendorff, et al. Discovery of 1,3-Diaminobenzenes as Selective Inhibitors of Platelet Activation at the PAR1 Receptor. ACS Med Chem Lett. 2012 Mar 8; 3(3): 232-237.
[2]. Motoji Kogushi, et al. The novel and orally active thrombin receptor antagonist E5555 (Atopaxar) inhibits arterial thrombosis without affecting bleeding time in guinea pigs. Eur J Pharmacol. 2011 Apr 25;657(1-3):131-7.