Neurokinin-1 receptor

Fosaprepitant (MK-0517, L-758,298) 是阿瑞匹坦的磷酰基前药。皮质类固醇和 5-HT 3 受体拮抗剂被批准与选择性 P 物质（NK-1 受体）拮抗剂阿瑞吡坦联合治疗，以预防化疗引起的急性和迟发性恶心和呕吐。 [1]

福沙匹坦二葡胺（30 mg/kg；腹腔注射；每天；持续7天）在绳中解除对吗啡的耐受性并增加抗损伤作用[1]。 动物模型：Sprague-Dawley大鼠[1] 剂量：30 mg/kg 给药：腹腔注射，每天，持续 7 天 结果：与对照组相比，吗啡的镇痛作用增强。

Sprague-Dawley rats were injected with morphine (10 mg/kg twice daily) and/or fosaprepitant (30 mg/kg once daily) for 7 days. Pain threshold was assessed by the hot plate test. Expression of SP and calcitonin gene-related peptide (CGRP) in the spinal cords of these rats was evaluated by immunohistochemistry.[2]

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Fosaprepitant (also known as MK-0517 and L-758,298) is a water-soluble phosphoryl prodrug for aprepitant, which, when administered intravenously, is converted to aprepitant within 30 min of intravenous administration via the action of ubiquitous phosphatases. Owing to the rapid conversion of fosaprepitant to the active form (aprepitant), fosaprepitant 115 mg provided the same aprepitant exposure in terms of AUC as aprepitant 12 mg orally, and fosaprepitant is expected to provide a correspondingly similar antiemetic effect as aprepitant. Clinical studies have suggested that fosaprepitant could be appropriate as an intravenous alternative to the aprepitant oral capsule. In a study in healthy subjects, fosaprepitant 115 mg was generally well tolerated at a final drug concentration of 1 mg/ml, and fosaprepitant 115 mg was AUC bioequivalent to aprepitant 125 mg. Fosaprepitant in the dose of 115 mg has been approved by the US FDA, the EU and the Australian authorities on day 1 of a 3-day oral aprepitant regimen, with oral aprepitant administered on days 2 and 3. Fosaprepitant may be a useful parenteral alternative to oral aprepitant. Further study is needed to clarify the utility of fosaprepitant in the prevention of CINV and to clarify optimal dosing regimens that may be appropriate substitutes for oral aprepitant[2].

[1]. Expert Opin Investig Drugs. 2007 Dec;16(12):1977-85.

[2]. Role of fosaprepitant, a neurokinin Type 1 receptor antagonist, in morphine-induced antinociception in rats. Indian J Pharmacol. 2016 Jul-Aug; 48(4): 394-398.
[3]. Fosaprepitant: a neurokinin-1 receptor antagonist for the prevention of chemotherapy-induced nausea and vomiting. Expert Rev Anticancer Ther . 2008 Nov;8(11):1733-42.

Fosaprepitant Dimeglumine is the dimeglumine salt form of fosaprepitant, the water-soluble, N-phosphorylated prodrug of aprepitant, with antiemetic activity. Upon intravenous administration and rapid conversion to aprepitant, this agent binds selectively to the human substance P/neurokinin 1 (NK1) receptors in the central nervous system (CNS). This inhibits receptor binding of the endogenous substance P and prevents substance P-induced emesis.

C37H56F7N6O16P

1004.8337

1004.34

C, 44.23; H, 5.62; F, 13.23; N, 8.36; O, 25.48; P, 3.08

265121-04-8

Fosaprepitant; 172673-20-0; Fosaprepitant-d4 dimeglumine

136086851

White solid powder

366.08

9

21

13

54

1130

7

P(N1C(N([H])C(C([H])([H])N2C([H])([H])C([H])([H])O[C@@]([H])([C@]2([H])C2C([H])=C([H])C(=C([H])C=2[H])F)O[C@]([H])(C([H])([H])[H])C2C([H])=C(C(F)(F)F)C([H])=C(C(F)(F)F)C=2[H])=N1)=O)(=O)(O[H])O[H].O([H])[C@]([H])([C@]([H])(C([H])([H])N([H])C([H])([H])[H])O[H])[C@@]([H])([C@@]([H])(C([H])([H])O[H])O[H])O[H].O([H])[C@]([H])([C@]([H])(C([H])([H])N([H])C([H])([H])[H])O[H])[C@@]([H])([C@@]([H])(C([H])([H])O[H])O[H])O[H]

VRQHBYGYXDWZDL-OOZCZQCLSA-N

InChI=1S/C23H22F7N4O6P.2C7H17NO5/c1-12(14-8-15(22(25,26)27)10-16(9-14)23(28,29)30)40-20-19(13-2-4-17(24)5-3-13)33(6-7-39-20)11-18-31-21(35)34(32-18)41(36,37)38;2*1-8-2-4(10)6(12)7(13)5(11)3-9/h2-5,8-10,12,19-20H,6-7,11H2,1H3,(H,31,32,35)(H2,36,37,38);2*4-13H,2-3H2,1H3/t12-,19+,20-;2*4-,5+,6+,7+/m100/s1

[3-[[(2R,3S)-2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)morpholin-4-yl]methyl]-5-oxo-4H-1,2,4-triazol-1-yl]phosphonic acid;(2R,3R,4R,5S)-6-(methylamino)hexane-1,2,3,4,5-pentol

MK0517; MK 0517; MK-0517; Fosaprepitant dimeglumine; Fosaprepitant dimeglumine salt; Ivemend; Fosaprepitant meglumine; MK-0517; Fosaprepitant (dimeglumine); UNII-D35FM8T64X; Emend; Inemend

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

注意： (1). 该产品在溶液状态不稳定，请现配现用。  (2). 请将本产品存放在密封且受保护的环境中，避免吸湿/受潮。

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

H2O: ~50 mg/mL (~49.8 mM)

配方 1 中的溶解度: 100 mg/mL (99.52 mM) in PBS (这些助溶剂从左到右依次添加，逐一添加), 澄清溶液; 超声助溶。

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请根据您的实验动物和给药方式选择适当的溶解配方/方案：
1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液));
2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方):
10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline);
假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL；
3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例;
4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶;
5、为保证最佳实验结果，工作液请现配现用！
6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们;
7、 以上所有助溶剂都可在 Invivochem.cn网站购买。