Roflupram是一种选择性的PDE4抑制剂（IC50=26.2 nM），具有口服活性和可透过血脑屏障的优点，能够逆转认知缺陷并和抑制促炎因子产生。

Obscurolide A1 是一种可从链霉菌 viridochromogenes 的培养硝酸盐中分离出的丁内酯，对牛的钙/钙调节非依赖性和非依赖性磷酸二酯酶表现出较弱的抑制活性

Racecadotril-D5 is intended for use as an internal standard for the quantification of racecadotril by GC- or LC-MS. Racecadotril (T1176) is a prodrug form of the neprilysin (NEP)inhibitor thiorphan. In vivo,racecadotril reduces or prevents castor oil-induced diarrhea without delaying intestinal transit in rats when administered at doses of 80 or 100 mg/kg,respectively. It also decreases the duration of diarrhea and increases body weight gain in a neonatal gnotobiotic pig model of human rotavirus-induced diarrhea. Formulations containing racecadotril have been used in the treatment of acute diarrhea.

Ro 61-8048 是一种选择性的、口服有效的犬尿氨酸 3-羟化酶抑制剂(IC50:37 nM)。它能够导致细胞喹啉酸浓度的显著增加。

Anecortave Acetate (NSC-24345) 是一种血管抑制类固醇，用于蛋白质组学研究。

CI-1044 is an inhibitor of PDE4 (IC50s: 0.29, 0.08, 0.56, 0.09 μM for PDE4A5, PDE4B2, PDE4C2 and PDE4D3).