2R,4R-Sacubitril is an impurity of Sacubitril, which is used in combination with valsartan for the treatment of patients with heart failure.

6-Hydroxy monopropylheptylphthalate 是 di (isononyl) cyclohexane-1,2-dicarboxylate (DINCH) 的一种代谢物。DINCH 属于邻苯二甲酸酯类增塑剂。

Gentisuric Acid，作为Aspirin的代谢产物同时也是α-酰胺化单加氧酶（PAM）的底物，可抵御Mitomycin C导致的DNA损伤。

6-Hydroxy-TSU-68为TSU-68的衍生物，此化合物为TSU-68在人肝微粒体生物转化路径中的代谢产物，其含量反映TSU-68的自诱导羟基化程度。

4'-Hydroxy Diclofenac-D4是4'-Hydroxy Diclofenac (T19819)的氘代化合物，可用于同位素示踪。4’-Hydroxy Diclofenac是由CYP2C9产生的Diclofenac代谢物，具有具有口服活性、抗炎性和缓解疼痛作用。

TXA707，作为TXA-709的活性代谢物，是一种FtsZ抑制剂，具有抗菌活性，并有潜力用于S. aureus的研究。

Bilirubin conjugate is a stable, water-soluble ditaurate derivative of bilirubin meant to mimic endogenous bilirubin glucuronide derivatives. In vivo, bilirubin circulates in the plasma and is taken up by hepatocytes and conjugated to one or two glucuronic acids in a reaction catalyzed by UDP glucuronidase to form bilirubin mono or diglucuronide. This water-soluble form is then excreted from the liver in bile in the feces or is converted to urobilinogen and excreted in the urine. In addition to aiding in the disposal of heme, bilirubin and its conjugated derivatives have been shown to exhibit anti-oxidant and antimutagenic effects and to play a role in gut barrier function.

3α-Hydroxy pravastatin sodium, the primary metabolite of Pravastatin, is a potent competitive inhibitor of HMG-CoA reductase.

Imatinib Impurity E 是 Imatinib 的杂质。Imatinib 是一种口服生物可用的酪氨酸激酶抑制剂，可选择性抑制 BCR/ABL，v-Abl，PDGFR，c-kit 激酶活性。Imatinib (STI571) 靠近 ATP 结合位点结合，将其锁定在封闭或自我抑制的构象中，因此半竞争性抑制蛋白质的酶活性。Imatinib 还抑制 SARS-CoV 和MERS-CoV。