Ezetimibe D4
(Synonyms: 依折麦布-D4,SCH 58235-d4) 目录号 : GC36020
An internal standard for the quantification of ezetimibe
Cas No.:1093659-90-5
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Ezetimibe-d4 is intended for use as an internal standard for the quantification of ezetimibe by GC- or LC-MS. Ezetimibe inhibits intestinal cholesterol absorption by preventing cholesterol uptake by the Niemann-Pick C1-like 1 (NPC1L1) protein, a cholesterol transporter located in the apical membrane of enterocytes.1,2 Upon oral administration ezetimibe undergoes rapid glucuronidation in the intestine where its glucuronide binds NPC1L1.1,2 Ezetimibe exhibits ED50 values of 0.0005-0.05 mg/kg in various animal models, selectively blocking cholesterol absorption without inhibiting pancreatic lipolytic enzyme activities in the intestinal lumen, affecting bile acid micelle solubilization of cholesterol, or interfering with the absorption of triglycerides, fatty acids, or bile acids.1,3
1.Wang, D.Q.Regulation of intestinal cholesterol absorptionAnnu. Rev. Physiol.69221-248(2007) 2.Garcia-Calvo, M., Lisnock, J., Bull, H.G., et al.The target of ezetimibe is Niemann-Pick C1-like 1 (NPC1L1)Proc. Natl. Acad. Sci. USA102(23)8132-8137(2005) 3.Sudhop, T., and von Bergmann, K.Cholesterol absorption inhibitors for the treatment of hypercholesterolaemiaDrugs62(16)2333-2347(2002)
| Cas No. | 1093659-90-5 | SDF | |
| 别名 | 依折麦布-D4,SCH 58235-d4 | ||
| Canonical SMILES | O=C1[C@H](CC[C@H](O)C2=CC=C(F)C=C2)[C@@H](C3=CC=C(O)C=C3)N1C(C([2H])=C4[2H])=C([2H])C([2H])=C4F | ||
| 分子式 | C24H17D4F2NO3 | 分子量 | 413.45 |
| 溶解度 | DMSO : 200 mg/mL (483.73 mM; Need ultrasonic); H2O : 0.1 mg/mL (0.24 mM; ultrasonic and warming and heat to 60°C) | 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。 |
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| 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。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.4187 mL | 12.0934 mL | 24.1867 mL |
| 5 mM | 0.4837 mL | 2.4187 mL | 4.8373 mL |
| 10 mM | 0.2419 mL | 1.2093 mL | 2.4187 mL |
| 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 | 只 |
| 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 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Simultaneous determination of ezetimibe and simvastatin in rat plasma by stable-isotope dilution LC-ESI-MS/MS and its application to a pharmacokinetic study
J Pharm Anal 2014 Aug;4(4):286-294.PMID:29403892DOI:10.1016/j.jpha.2013.08.002.
A simple, sensitive and specific liquid chromatography-tandem mass spectrometry method was developed for simultaneous quantification of ezetimibe and simvastatin in rat plasma. The deuterium isotopes: Ezetimibe D4 and simvastatin d6 were used as internal standards for ezetimibe and simvastatin, respectively. MS/MS detection involved a switch of electron spray ionization mode from negative to positive at retention time 3.01 min. Samples were extracted from plasma by liquid-liquid extraction using tertiary butyl methyl ether. Chromatographic separation was achieved with Agilent Eclipse XBD-C18 column using mobile phase that consisted of a mixture of ammonium acetate (pH4.5; 10 mM)-acetonitrile (25:75 v/v). The method was linear and validated over the concentration range of 0.2-40.0 ng/mL for simvastatin and 0.05-15.0 ng/mL for ezetimibe. The transitions selected were m/z 408.3→271.1 and m/z 412.0→275.10 for ezetimibe and Ezetimibe D4, and m/z 419.30→285.20 and m/z 425.40→199.20 for simvastatin and simvastatin d6. Intra- and inter-batch precisions for ezetimibe were 1.6-14.8% and 2.1-13.4%; and for simvastatin 0.94-9.56% and 0.79-12%, respectively. The proposed method was sensitive, selective, precise and accurate for the quantification of ezetimibe and simvastatin simultaneously in rat plasma. The method was successfully applied to a pharmacokinetic study by oral co-administration of ezetimibe and simvastatin in SD rats.
Development and Validation of an LC-MS-MS Method for the Simultaneous Determination of Simvastatin, Simvastatin Acid and Ezetimibe in Human Plasma and Its Application to Pharmacokinetic Study in the Indian Population
J Chromatogr Sci 2016 Jul;54(6):985-96.PMID:27048644DOI:10.1093/chromsci/bmw043.
A simple, selective, sensitive and high-throughput liquid chromatography-tandem mass spectrometry (LC-MS-MS) method has been developed and validated for the simultaneous quantification of simvastatin (SS), simvastatin acid (SSA, active metabolite of SS) and ezetimibe (EZM) in K2 EDTA containing human plasma, using simvastatin D6, simvastatin acid D3 and Ezetimibe D4 as internal standards (ISTDs), respectively. A volume of plasma sample of only 400 µL was processed by the solid phase extraction technique; then 20 µL of processed sample was run on a Phenomenex, Kinetix XB C18, 150 × 4.6 mm, 5 µm column using an isocratic mobile phase consisting of 10 mM ammonium formate buffer (pH 4.0 ± 0.3): acetonitrile (27 : 73, v/v) with a run time of 6.3 min. The precursor and product ions of SSA, EZM and their ISTDs were monitored on a triple quadrupole instrument operated in the negative ionization mode, and SS was monitored in the positive mode. The method was validated over a concentration range of 0.2-80 ng/mL for SS, 0.1-60 ng/mL for SSA and 0.05-15 ng/mL for EZM. The method has been successfully applied in clinical pharmacokinetic study in the Indian population. The Cmax, AUC0-inf and Tmax values obtained in our study were 10.61 ± 5.287, 77.58 ± 29.367 and 1.62 ± 0.436 for EZM; 69.74 ± 45.274, 190.71 ± 107.271 and 1.74 ± 0.480 for SS; and 25.36 ± 23.576, 139.24 ± 131.653 and 3.95 ± 0.671 for SSA, respectively.