Bazinaprine 是一种选择性的、可逆的单胺氧化酶抑制剂(MAOI)，是治疗抑郁症的候选化合物。Bazinaprine 对A 型单胺氧化酶显示出较强的抑制作用，对b 型单胺氧化酶只显示出较弱的抑制作用。Bazinaprine 在体内可逆，但在体外不可逆。

1-phenyl-3,4-dihydroisochinoline (3,4-Dihydro-1-phenylisoquinoline) 是神经递质多巴胺的结构类似物，与中枢神经系统中的多巴胺受体相互作用。它已被研究为治疗帕金森病、阿尔茨海默病和亨廷顿舞蹈症等神经疾病的潜在治疗剂。

Enoximone 是一种选择性的，具有口服活性的磷酸二酯酶 III 抑制剂，也是正性肌力血管舒张剂。它通过抑制 cGMP 抑制的 PDE 来诱导血管舒张并增加细胞内 cAMP 水平。它还表现出 PDE4抑制作用，对心肌 PDE4A 的 IC50为 21.1 μM。它用于充血性心力衰竭的研究，并具有支气管扩张，抗哮喘和抗炎作用。

Disodium monofluorophosphate (NSC248) 是丙酮酸激酶和碱性磷酸酶的竞争性抑制剂，它也不可逆地抑制磷酸化酶磷酸酶。

PF-04449613 is a phosphodiesterase 9A (PDE9A) inhibitor (IC50= 22 nM).1It is selective for PDE9A over PDE1C (IC50= >1,000 nM), as well as over a variety of other PDEs, inhibiting PDE2-8, -10, and -11 activity by less than 30% in a panel of enzymes, ion channels, and transporters at 1 μM but does inhibit the human dopamine transporter (DAT; Ki= 293 nM). PF-04449613 (0.1-100 mg/kg, s.c.) increases cerebrospinal fluid (CSF) levels of cyclic GMP (cGMP) in rats. Subcutaneous administration of PF-04449613 (10 mg/kg) increases the rate of dendritic spine formation and elimination in mouse primary motor cortex pyramidal neuronsin vivo.2It increases the average running speed of mice in an accelerating rotarod task, indicating improved motor learning, at the same dose. 1.Claffey, M.M., Helal, C.J., Verhoest, P.R., et al.Application of structure-based drug design and parallel chemistry to identify selective, brain penetrant, in vivo active phosphodiesterase 9A inhibitorsJ. Med. Chem.55(21)9055-90

Kuraridine is measured against cGMP PDE5 to identify potent cGMP specific phosphodiesterase type 5 inhibitory constituents.