Home>>Lipids>>4-Methylumbelliferyl Oleate

4-Methylumbelliferyl Oleate

(Synonyms: 4-甲基伞形酮油酸酯) 目录号 : GC42444 复制 一键复制产品信息

4-Methylumbelliferyl Oleate是一种在被脂肪酶切割后可释放4-甲基伞形酮(4-MU; Ex/Em: 320/450nm)的荧光底物,激发波长依赖于pH值(pH 4.6时为330nm,pH 7.4时为370nm,pH 10.4时为385nm),被广泛应用于生物样本中酸性和碱性脂肪酶活性的检测。

4-Methylumbelliferyl Oleate Chemical Structure

Cas No.:18323-58-5

规格 价格 库存 购买数量
25mg
¥739.00
现货
50mg
¥1,309.00
现货
100mg
¥1,866.00
现货
250mg
¥2,510.00
现货

电话:400-920-5774 Email: sales@glpbio.cn

Customer Reviews

Based on customer reviews.

Sample solution is provided at 25 µL, 10mM.

加载文献引用…

Description

4-Methylumbelliferyl Oleate is a fluorogenic substrate that releases 4-methylumbelliferone (4-MU; Ex/Em: 320/450nm) upon cleavage by lipases, features a pH-dependent excitation wavelength (330nm at pH 4.6, 370nm at pH 7.4, and 385nm at pH 10.4), and is widely used for detecting acid and alkaline lipase activity in biological samples[1,2,3]. 4-Methylumbelliferyl Oleate offers high sensitivity, produces a blue fluorescent signal upon hydrolysis, and is suitable for lipase kinetic studies and the screening of lipase inhibitors (e.g., pancreatic lipase)[4,5,6].

Reference:
[1] ZHANG J, KANG M J, KIM M J, et al. Pancreatic lipase inhibitory activity of taraxacum officinale in vitro and in vivo[J]. Nutrition Research and Practice, 2008, 2(4): 200-203.
[2] KOSTER J F, VAANDRAGER H, VAN BERKEL T J C. Study of the hydrolysis of 4-methylumbelliferyl oleate by acid lipase and cholesteryl oleate by acid cholesteryl esterase in human leucocytes, fibroblasts and liver[J]. Biochimica et Biophysica Acta (BBA)-Lipids and Lipid Metabolism, 1980, 618(1): 98-105.
[3] SHIMURA S, TSUZUKI W, SUZUKI T. Determination of lipase activity in organic solvent using fluorescent substrate and its application to the screening of lipase inhibitor[J]. Analytical Sciences, 1991, 7(1): 15-18.
[4] ZHANG J, YANG Y, QIAN X K, et al. Design, Synthesis, and Structure-Activity Relationship Study of Pyrazolones as Potent Inhibitors of Pancreatic Lipase[J]. ChemMedChem, 2021, 16(10): 1600-1604.
[5] NYFELER E, GROGNUX J, WAHLER D, et al. A sensitive and selective high‐throughput screening fluorescence assay for lipases and esterases[J]. Helvetica Chimica Acta, 2003, 86(8): 2919-2927.
[6] SOSNOWSKA D, PODSĘDEK A, KUCHARSKA A Z, et al. Comparison of in vitro anti-lipase and antioxidant activities, and composition of commercial chokeberry juices[J]. European Food Research and Technology, 2016, 242(4): 505-515.

4-Methylumbelliferyl Oleate是一种在被脂肪酶切割后可释放4-甲基伞形酮(4-MU; Ex/Em: 320/450nm)的荧光底物,激发波长依赖于pH值(pH 4.6时为330nm,pH 7.4时为370nm,pH 10.4时为385nm),被广泛应用于生物样本中酸性和碱性脂肪酶活性的检测[1,2,3]。4-Methylumbelliferyl Oleate灵敏度高,水解后产生蓝色荧光信号,适用于脂肪酶动力学研究及脂肪酶抑制剂筛选(如胰腺脂肪酶)等领域[4,5,6]

实验参考方法

使用4-Methylumbelliferyl Oleate测定艾叶提取物对胰脂肪酶的抑制活性[1]

(1)在黑色96孔板中加入25μL不同浓度的艾叶样品溶液和25μL胰脂肪酶(1mg/mL)溶液,在37℃下预孵育10min。

(2)加入50μL 4-Methylumbelliferyl Oleate(1mM)启动反应,在37℃下孵育20min。

(3)加入100μL 0.1M柠檬酸缓冲液(pH 4.2)终止反应。

(4)使用荧光酶标仪在激发波长355nm,发射波长460nm下检测释放的4-MU的荧光强度。

(5)根据对照组、空白组、样品组和背景组的荧光值计算抑制率,公式为:抑制率(%)= [1-(样品组荧光值-背景组荧光值)/(对照组荧光值-空白组荧光值)] × 100。

(6)通过IC50值(抑制胰脂肪酶活性50%)评估胰腺脂肪酶抑制活性。

Reference:

[1] CHANG Y, ZHANG D, YANG G, et al. Screening of anti-lipase components of Artemisia argyi leaves based on spectrum-effect relationships and HPLC-MS/MS[J]. Frontiers in Pharmacology, 2021, 12: 675396.

化学性质

Cas No. 18323-58-5 SDF
别名 4-甲基伞形酮油酸酯
Canonical SMILES O=C1C=C(C)C2=C(C=C(OC(CCCCCCC/C=C\CCCCCCCC)=O)C=C2)O1
分子式 C28H40O4 分子量 440.6
溶解度 Chloroform: 20 mg/ml,DMF: 10 mg/ml,DMSO: 0.1 mg/ml 储存条件 Store at -20°C
General tips 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。
储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。
为了提高溶解度,请将管子加热至37℃,然后在超声波浴中震荡一段时间。
Shipping Condition 评估样品解决方案:配备蓝冰进行发货。所有其他可用尺寸:配备RT,或根据请求配备蓝冰。

溶解性数据

制备储备液
1 mg 5 mg 10 mg
1 mM 2.2696 mL 11.3482 mL 22.6963 mL
5 mM 453.9 μL 2.2696 mL 4.5393 mL
10 mM 227 μL 1.1348 mL 2.2696 mL
  • 摩尔浓度计算器

  • 稀释计算器

  • 分子量计算器

质量
=
浓度
x
体积
x
分子量
 
 
 
*在配置溶液时,请务必参考产品标签上、MSDS / COA(可在Glpbio的产品页面获得)批次特异的分子量使用本工具。

计算

动物体内配方计算器 (澄清溶液)

第一步:请输入基本实验信息(考虑到实验过程中的损耗,建议多配一只动物的药量)
给药剂量 mg/kg 动物平均体重 g 每只动物给药体积 ul 动物数量
第二步:请输入动物体内配方组成(配方适用于不溶于水的药物;不同批次药物配方比例不同,请联系GLPBIO为您提供正确的澄清溶液配方)
% DMSO % % Tween 80 % saline
计算重置

Product Documents

Quality Control & SDS

View current batch: