Desmethyl Ketoprofen是一个片段分子，CAS号为22071-22-3，可作为分子拼接、扩展和修饰的重要骨架，为新型候选药物的设计与筛选提供结构基础与研究工具，常用于药物发现、药物合成等相关研究。

Ritalinic acid是一个片段分子，CAS号为19395-41-6，可作为分子拼接、扩展和修饰的重要骨架，为新型候选药物的设计与筛选提供结构基础与研究工具，常用于药物发现、药物合成等相关研究。

Gefitinib impurity 1 is a compound derived from Gefitinib, a potent and selective EGFR tyrosine kinase inhibitor (IC 50 = 33 nM). This orally active compound selectively inhibits tumor cell growth stimulated by EGF (IC 50 = 54 nM) and inhibits EGFR autophosphorylation induced by EGF in tumor cells. Additionally, Gefitinib induces autophagy and exhibits antitumor activity.

Risperidone E-oxime is an impurity of Risperidone, a serotonin 5-HT2 receptor blocker, P-glycoprotein inhibitor, and potent dopamine D2 receptor antagonist (Kis of 4.8 and 5.9 nM for 5-HT2A and dopamine D2 receptors, respectively).

Hydroxydehydro nifedipine carboxylate is a metabolite of nifedipine .1 1.Roosemalen, M.C.M., Soons, P.A., Funaki, T., et al.High-performance liquid chromatographic determination of the polar metabolites of nifedipine in plasma, blood and urineJ. Chromatogr.565(1-2)516-522(1991)

trans-hydroxy Glimepiride is an active metabolite of the sulfonylurea glimepiride .1It is formed from glimepiride primarily in the liver by the cytochrome P450 (CYP) isoform CYP2C9. 1.Langtry, H.D., and Balfour, J.A.Glimepiride. A review of its use in the management of type 2 diabetes mellitusDrugs55(4)563-584(1998)

5,6-epoxy-13-cis Retinoic Acid 是一种13-顺式视黄酸的代谢物。

LysoPE(18:2/0:0) 是一种与亚油酸功能相关的人类血清代谢物，并作为 DEHP 和 Aroclor 1254 联合毒性的潜在生物标志物。

3-Methyl-2-quinoxalinecarboxylic acid (Standard) 是 3-Methyl-2-quinoxalinecarboxylic acid 的标准品，适用于定量分析、质量控制及生化实验等相关研究。3-Methyl-2-quinoxalinecarboxylic acid 在生命科学相关研究中具有广泛的应用。