Tetomilast (OPC-6535) is a phosphodiesterase-4 (PDE4) inhibitor, potentially effective in treating inflammatory bowel disease (IBD) and chronic obstructive pulmonary disease (COPD).

PKM2 activator 5 是一种新型有效的 PKM2 激活剂（ AC50：0.316 µM），具有潜在的抗癌活性，可用于研究癌症代谢相关疾病。

4-Nitrophenyl phenylphosphonate is a substrate for 5'-nucleotide phosphodiesterases. It is a more preferable substrate to 5'-nucleotide phosphodiesterases than naturally occurring nucleotides or bis(4-nitrophenyl) phosphate because of its stability, ease of synthesis, and higher rate of hydrolysis under saturating conditions.

11-Oxoisomogroside V 是从罗汉果(Siraitia grosvenorii)中分离得到的三萜类糖苷化合物，具有抗氧化和抗炎活性。11-Oxoisomogroside V 可激活 PGC-1α 的转录活性。11-Oxoisomogroside V 可提高荧光素酶活性。

Enpp-1-IN-5 是一种有效的外核苷酸焦磷酸酶-磷酸二酯酶 1 (enpp-1) 抑制剂。ENPP 1 显示出广泛的特异性，能够切割多种底物（包括核苷酸和核苷酸糖的磷酸二酯键、核苷酸和核苷酸糖的焦磷酸键）。 Enpp-1-IN-5 具有潜力进行癌症和传染病的研究。

PF-06284674 is a cell permeable, potent and selective M2 isoform of pyruvate kinase (PKM2) activator.

ITI-214 free base is a picomolar PDE1 inhibitor with excellent selectivity against other PDE family members and against a panel of enzymes, receptors, transporters, and ion channels, exhibits potent PDE1 inhibitory activity (Ki = 58 pM).

L-6355 is an agent of bioactive chemicals.

calmodulin-sensitive cyclic GMP phosphodiesterase inhibitor