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Pregnanediol (5Beta-Pregnane-3Alpha,20alpha-Diol) 是一种黄体酮的主要代谢物 (metabolite)，能够通过尿液排出。它提供了一种间接测定体内孕激素水平的方法。

PFB-FDGlu 是一种溶酶体葡糖脑苷脂酶（GCase）底物，具有细胞渗透特异性，裂解后产生荧光素。PFB-FDGlu 通常与流式细胞仪结合使用，以单个细胞为基础测量活细胞中 GCase 的活性。

Benperidol (Anquil)是一种具有抗精神病和安定作用的丁酮类化合物，在阻断 D2 受体方面具有很好的疗效。Benperidol可用于正电子发射断层扫描(PET)测量体内 D(2)类多巴胺受体的结合情况。

3,4-Dimethoxybenzyl alcohol 是木质素降解真菌的次级代谢产物，通常作为非酚性底物测定木质素分解活性。Veratryl alcohol 保护木质素过氧化物酶 (LiP) 避免因为 H2O2 而失活并且防止 LiP III 化合物的累积[3]

DPPH (2,2-Diphenyl-1-picrylhydrazyl) 是一种稳定的氮中心的自由基，可用于测量抗氧化剂的自由基清除活性。DPPH 具有单一电子，故能接受一个电子或氢离子，在波长为 517 nm 下具有最大吸收。

4-Aminohippuric Acid 是诊断剂，能够用于肾脏检测，在肾血浆流量的测定中使用。

DTNB (Ellman’s Reagent) 是一种能够用于定量巯基数量或浓度的化学物质，可用于检测游离巯基。

2-Iodohippuric Acid 可以用来测量肾脏的清除率用于肾功能研究，也用于某些疾病的诊断，如肝病和肾病。此外，它还用于某些药物的合成。

2,4-Dihydroxypyridine 是一种吡啶衍生物，作为螯合剂与金属离子结合并形成络合物。它被用作测定各种离子浓度的试剂，如钙、镁和磷酸盐；也用于测量酶催化反应的速率；还用于蛋白质、碳水化合物和其他生物分子的检测和定量。

Malantide acetate(86555-35-3 free base) 是一种由环 AMP 依赖性蛋白激酶 (PKA) 磷酸化的十二肽，可增加 PKA 活性。 Malantide 是一种由 PKA 磷酸化的合成肽，用于在体外测量 PKA 活性。

AM679 is a potent and selective FLAP inhibitor with IC50s of 2.2 nM 0.6 nM 154 nM for FLAP binding hLA hWB respectively. IC50 value: 2.2 nM 0.6 nM 154 nM(FLAP binding hLA hWB) [1] AM679 showed an improved CYP inhibition profile (IC50 3A4 = 16.7 lM, 2C9 =

Biotin-DADOO (Biotinyl-3,6-dioxaoctanediamine) 是生物素酰化试剂，能够与雌二醇结合，形成生物素-雌二醇共轭化合物，进而利用酶免疫测定法测定血浆雌二醇的浓度。

5-BrUTP sodium salt can be used to label RNA to measure the transcription.

D21-2393 subjects received a single-oral-dose of edoxaban 30-90 mg in each study occasion under fasting condition. Serial blood samples were collected to measure the plasma concentrations of edoxaban and its major active metabolite D21-2393. Meanwhile, PT, INR, aPTT were measured pre- and post-dose.

F-ara-EdU 是一个稳定性高且毒性低的 DNA 合成探针，通过结合细胞内部的 DNA 或 RNA 来用于细胞增殖和 DNA 复制的标记。此外，F-ara-EdU 可用于检测细胞内 DNA 的合成速率，同时在研究 DNA 修复与损伤机制方面也有应用。

Nicotinoyl azide (N-Az) 是一种光活化化学探针。它已被用于测量嘌呤核碱基的溶剂可及性。

Bicisate dihydrochloride is usually complex with technetium Tc99m to measure cerebral blood flow with single-photon emission computed tomography (SPECT).

Bicisate is usually complex with technetium Tc99m for its usage as a tracer to measure cerebral blood flow with single-photon emission computed tomography (SPECT).

Gaxilose, also known as 4-Galactosylxylose, a synthetic disaccharide and a substrate of intestinal lactase. Gaxilose is used in a new noninvasive diagnostic test based on urine or serum measurement of D-xylose after lactase cleavage of orally administered

3-OMFP Cyclohexylammonium salt (OMFP Cyclohexylammonium salt) 是 PTEN 抑制研究的底物，可用来测定CDC25B催化结构域的酶活性。

PF-6808472 is a cell permeable covalent probe suitable for click chemistry designated to measure kinase selectivity in intact cells. PF-6808472 contains sulfonyl fluoride group, which react with conserved lysine residue within kinase ATP binding site.

WW-781 is used to measure action potential propagation in the heart.

Bz-IEGR-pNA is a colorimetric substrate for Factor Xa.1 Factor Xa preferentially binds to and cleaves the Ile-Glu-Gly-Arg (IEGR) peptide sequence to release p-nitroanilide (pNA), which can be quantified by colorimetric detection at 405 nm as a measure of Factor Xa activity.References1. Aruell, L., Friberger, P., Karlsson, G., et al. A new sensitive and highly specific chromogenic peptide substrate for factor Xa. Thromb. Res. 11(5), 595-609 (1977). Bz-IEGR-pNA is a colorimetric substrate for Factor Xa.1 Factor Xa preferentially binds to and cleaves the Ile-Glu-Gly-Arg (IEGR) peptide sequence to release p-nitroanilide (pNA), which can be quantified by colorimetric detection at 405 nm as a measure of Factor Xa activity. References1. Aruell, L., Friberger, P., Karlsson, G., et al. A new sensitive and highly specific chromogenic peptide substrate for factor Xa. Thromb. Res. 11(5), 595-609 (1977).

PBD-BODIPY is a probe for the spectrophotometric measurement of autoxidation reactions. Co-autoxidation of the PBD-BODIPY signal carrier and a hydrocarbon co-substrate can be quantified by monitoring loss of absorbance at 591 nm. PBD-BODIPY has been used to measure the activity of radical-trapping antioxidants in cell-free assays. It has also been used as a fluorescent probe for the detection of epoxidation activity.