PDE1-IN-4

PDE1-IN-4 是有效的、选择性的 PDE1 (磷酸二酯酶 -1) 抑制剂，能够作用于 PDE1C (IC50: 10 nM)、PDE1A (IC50: 145 nM) 和 PDE1B (IC50: 354 nM)。PDE1-IN-4 能够调控 cAMP (3′,5′- 环磷酸腺苷) 和 cGMP (3′,5′- 环磷酸鸟苷)，表现出抗纤维化效果。PDE1-IN-4 能够抑制 TGF-β1 诱导的人肺成纤维细胞分化。PDE1-IN-4 能够用于研究特发性肺纤维化 (IPF)。

GPD-1116 是一种口服活性的PDE4和PDE1磷酸二酯酶抑制剂，能有效减少烟雾导致的肺细胞凋亡。此化合物在多种动物疾病模型中显示出疗效，如肺气肿、急性肺损伤、慢性阻塞性肺病 (COPD)、哮喘及肺动脉高压。

Fenspiride-d5 is intended for use as an internal standard for the quantification of fenspiride by GC- or LC-MS. Fenspiride is an antagonist of histamine H1 receptors and a non-steroidal anti-inflammatory drug (NSAID). It inhibits histamine-induced contraction of isolated guinea pig trachea but not histamine-induced inotropy of isolated guinea pig heart. It also inhibits phosphodiesterase 4 (PDE4), PDE5, and PDE3 (IC50s = 69, ~158, and 363 µM, respectively, in isolated human bronchi derived from patients with lung cancer). It is selective for these phosphodiesterases over PDE1 and PDE2, where it provides less than 25% inhibition. Fenspiride potentiates the airway relaxant effects of isoproterenol and sodium nitroprusside indicating an effect on cAMP and cGMP phosphodiesterases, respectively. Aerosolized fenspiride (1 mg/ml) reverses bronchoconstriction induced by capsaicin and, when used at aerosolized concentrations ranging from 1-10 mg/ml, reduces cough induced by citric aci......

Vardenafil-d5 是 Vardenafil 的氘代化合物。Vardenafil 的 CAS 号为 224785-90-4。Vardenafil 是选择性、高效的、具有口服活性的磷酸二酯酶5抑制剂，IC50=0.7 nM。它能够非竞争性地抑制环磷酸鸟苷水解，从而提高 cGMP 水平。它对 PDE1 (180 nM)，PDE6 (11 nM)，PDE2，PDE3，PDE4 (>1000 nM) 具有选择性。它可用于研究勃起功能障碍。