生物活性
CGS 21680 is a specific adenosine (A2A) subtype receptor agonist with an IC50 of 5.6 μM for reducing input resistance of the membrane potential. The Ki of CGS 21680 adenosine (A2A) subtype receptor is 27 nM. CGS 21680 has less affinity for A1 and A3 adenosine receptors than A2A- and A2B subtype. CGS 21680 starting at the onset of arthritis (Day 25) improved the clinical signs at Days 26-35 and ameliorated histological states in the joint and paw. The degree of oxidative and nitrosative damage was markedly decreased in CGS 21680-treated mice as exhibited by increased contents of malondialdehyde, formation of nitrotyrosine, and activation of poly (ADP-ribose) polymerase. Plasma levels of proinflammatory cytokines including tumor necrosis factor, interleukin 1ss (IL-1ss) and IL-6 were also decreased by CGS 21680. CGS 21680 also reduced the expression of inducible nitric oxide synthase and cyclooxygenase-2.
化学数据
| 分子量 | 499.52 |
| 分子式 | C23H29N7O6 |
| CAS号 | 120225-54-9 |
| 纯度 | >98% |
| 溶解性（25°C） | DMSO |
| 储存和运输条件 | 固体粉末： -20°C 冷藏长期储存
常温运输及临时存放 |
实验操作 来自于公开的文献，仅供相同实验参考（如实验材料、目的不同，请参考其他文献）
| 动物实验 |
|---|
| 动物模型 | rat |
| 配制 | water |
| 剂量 | 10 mg/kg |
| 给药处理 | p.o. |
不同实验动物依据体表面积的等效剂量转换表（数据来源于FDA指南）
| 小鼠 | 大鼠 | 兔 | 豚鼠 | 仓鼠 | 狗 |
| 重量 (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| 体表面积 (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km系数 | 3 | 6 | 12 | 8 | 5 | 20 |
| 动物 A (mg/kg) = 动物 B (mg/kg) × | 动物 B的Km系数 |
| 动物 A的Km系数 |
例如，依据体表面积折算法，将化合物用于小鼠的剂量20 mg/kg 换算成大鼠的剂量，需要将20 mg/kg 乘以小鼠的Km系数（3），再除以大鼠的Km系数（6），得到化合物用于大鼠的等效剂量为10 mg/kg。
储备液配制
以下数据基于产品分子量，对于特殊产品，请参照COA中的储备液配制条件和说明进行操作。
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|
| 1 mM | 2.0019 mL | 10.0096 mL | 20.0192 mL |
| 5 mM | 0.4004 mL | 2.0019 mL | 4.0038 mL |
| 10 mM | 0.2002 mL | 1.001 mL | 2.0019 mL |
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