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LY2228820

p38 MAP激酶抑制剂,Ralimetinib dimesylate (LY2228820) 是一种选择性，ATP竞争性的 p38 MAPK α/β 抑制剂，IC50 分别为5.3 和 3.2 nM。

目录号: PC11762 纯度: ≥98%

CAS No. :862507-23-1

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中文名称	LY2228820
中文别名	5-[2-(1,1-二甲基乙基)-5-(4-氟苯基)-1H-咪唑-4-基]-3-(2,2-二甲基丙基)-3H-咪唑[4,5-b]吡啶-2-氨基二甲烷磺酸盐;5-[2-(叔丁基)-4-(4-氟苯基)-1H-咪唑-5-基]-3-(2,2-二甲基丙基)-3H-咪唑并[4,5-B]吡啶-2-胺甲磺酸盐;LY2228820 抑制剂
英文名称	LY2228820
英文别名	3H-Imidazo[4,5-b]pyridin-2-amine, 5-[2-(1,1-dimethylethyl)-4-(4-fluorophenyl)-1H-imidazol-5-yl]-3-(2,2-dimethylpropyl)-, methanesulfonate (1:2);3H-Imidazo[4,5-b]pyridin-2-amine, 5-[2-(1,1-dimethylethyl)-4-(4-fluorophenyl)-1H-imidazol-5-yl...;3H-Imidazo[4,5-b]pyridin-2-amine, 5-[2-(1,1-dimethylethyl)-4-(4-fluorophenyl)-1H-imidazol-5-yl]-3-(2,2-dimethylpropyl)-, meth;5-(2-tert-Butyl-5-(4-fluorophenyl)-1H-imidazol-4-yl)-3-neopentyl-3H-imidazo[4,5-b]pyridin-2-amine methanesulfonate;5-[2-tert-butyl-4-(4-fluorophenyl)-1H-imidazol-5-yl]-3-(2,2-dimethylpropyl)imidazo[4,5-b]pyridin-2-amine,methanesulfonic acid;LY 2228820;LY2228820 (LY-2228820, LY 2228820);LY-2228820;LY2228820 2MsOH;LY2228820 dimesylate;Ralimetinib dimesylate;Ralimetinib Mesylate;UNII-QUW7B71FO9;LY2228820;QUW7B71FO9;Ralimetinib mesylate [USAN];Ralimetinib mesylate (USAN);5-(2-(tert-butyl)-4-(4-fluorophenyl)-1H-imidazol-5-yl)-3-neopentyl-3H-imidazo[4,5-b]pyridin-2-amine dimethanesulfonate;Ralimetinib (LY2228820);NARMJPIBAXVUIE-UHFFFAOYSA-N;HMS3654J16;BCPP000179;Ralimetinib 2MsOH
Cas No.	862507-23-1
分子式	C₂₆H₃₇FN₆O₆S₂
分子量	612.74
包装储存	Sealed and stored at 4℃，, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

生物活性

Ralimetinib dimesylate (LY2228820 dimesylate) is a selective, ATP-competitive inhibitor of p38 MAPK α/β with IC₅₀s of 5.3 and 3.2 nM, respectively. Ralimetinib (LY2228820) selectively inhibits phosphorylation of MK2 (Thr334), with no effect on phosphorylation of p38a MAPK, JNK, ERK1/2, c-Jun, ATF2, or c-Myc.

性状

Solid

IC50 & Target[1][2]

p38β MAPK

3.2 nM (IC₅₀)

p38α MAPK

5.3 nM (IC₅₀)

体外研究(In Vitro)

Ralimetinib dimesylate inhibits p38α, as well as the level of phosphoMAPKAPK-2 (pMK2) in RAW 264.7 cells, with IC₅₀ values of 7 nM and 34.3 nM, respectively. Furthermore, Ralimetinib dimesylate inhibits lipopolysaccharide (LPS)-induced TNFα formation in murine peritoneal macrophages, with IC₅₀ of 5.2 nM. In multiple myeloma (MM) cells, including INA6, RPMI-8226, U266, and RPMI-Dox40, Ralimetinib dimesylate (LY2228820) (200 nM-800 nM) significantly blocks p38MAPK signaling, as revealed by its inhibition on phosphorylation of HSP27, a downstream target of p38MAPK, without affecting the expression level of HSP27. Ralimetinib dimesylate (200 nM-400 nM) enhances bortezomib-induced cytotoxicity and apoptosis, but Ralimetinib dimesylate alone doesnt inhibit the growth of MM.1S cells. Ralimetinib dimesylate (200 nM-800 nM) also inhibits secretion of IL-6 and MIP-1α in long-term BM stromal cells (LT-BMSCs), BM mononuclear cells (BMMNCs), peripheral blood (PB) CD138, CD138 or PB CD14 cells. Ralimetinib dimesylate (400 nM-800 nM) also blocks osteoclastogenesis from CD14 cells.

Medlife has not independently confirmed the accuracy of these methods. They are for reference only.

体内研究(In Vivo)

In LPS-induced mice, Ralimetinib dimesylate effectively inhibits the formation of TNFα with a threshold minimum 50% effective dose (TMED₅₀) less than 1 mg/kg. In a rat model of collagen-inducedarthritis (CIA), Ralimetinib dimesylate displays potent effects on paw swelling, bone erosion, and cartilage destruction, with a threshold minimum 50% effective dose (TMED₅₀)of 1.5 mg/kg. Ralimetinib dimesylate inhibits tumor phospho-MK2 in a dose-dependent manner (TED₅₀=1.95 mg/kg, TED₇₀=11.17 mg/kg) in mice implanted with B16-F10 melanoma. Ralimetinib dimesylate inhibits MK2 phosphorylation: mouse in vivo TED₅₀=1.01 mg/kg (compound exposure approximately 100 nM) and human ex vivo IC₅₀=0.12 μM with either mouse or human PBMC.

Medlife has not independently confirmed the accuracy of these methods. They are for reference only.

运输条件

Room temperature or refrigerated transportation.

储存方式

Sealed and stored at 4℃，, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

ClinicalTrial

参考文献

[1]. Mader M, et al. Imidazolyl benzimidazoles and imidazo[4,5-b]pyridines as potent p38alpha MAP kinase inhibitors with excellent in vivo antiinflammatory properties. Bioorg Med Chem Lett, 2008, 18(1), 179-183. [Information]

[2]. Ishitsuka K, et al. p38 mitogen-activated protein kinase inhibitor LY2228820 enhances bortezomib-induced cytotoxicity and inhibits osteoclastogenesis in multiple myeloma; therapeutic implications. Br J Haematol, 2008, 141(5), 598-606. [Information]

[3]. Campbell RM, et al. Characterization of LY2228820 dimesylate, a potent and selective inhibitor of p38 MAPK with antitumor activity. Mol Cancer Ther. 2014 Feb;13(2):364-74. [Information]

溶解度数据

体外研究:

DMSO : 61 mg/mL (99.55 mM; Need ultrasonic and warming)

H₂O : ≥ 33.33 mg/mL (54.40 mM)

* "≥" means soluble, but saturation unknown.

配制储备溶液

浓度溶剂体积质量	1 mg	5 mg	10 mg

1 mM	1.6320 mL	8.1601 mL	16.3201 mL
5 mM	0.3264 mL	1.6320 mL	3.2640 mL
10 mM	0.1632 mL	0.8160 mL	1.6320 mL

产品不同，其溶解度不同。建议根据产品选择合适的溶剂配制储备溶液；配成溶液后，建议分装保存，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, 6 months; -20°C, 1 month (sealed storage, away from moisture)。-80°C 储存时，建议在 6 个月内使用，-20°C 储存时，建议在 1 个月内使用。

体内研究:

建议根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都建议先按照 体外研究 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用；以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

1.

建议依照次序添加每种溶剂： 10% DMSO 40% PEG300 5% Tween-80 45% saline
Solubility: ≥ 2.5 mg/mL (4.08 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (4.08 mM，饱和度未知) 的澄清溶液。
以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。
将 0.9 g 氯化钠，完全溶解于 100 mL ddH?O 中，得到澄清透明的生理盐水溶液
2.

建议依照次序添加每种溶剂： 10% DMSO 90% (20% SBE-β-CD in saline)
Solubility: ≥ 2.5 mg/mL (4.08 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (4.08 mM，饱和度未知) 的澄清溶液。
以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。
将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
3.

建议依照次序添加每种溶剂： 10% DMSO 90% corn oil
Solubility: ≥ 2.5 mg/mL (4.08 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (4.08 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。
以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

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产品使用指南

Data Sheet

1：一般建议：溶解度为Medlife测试数据，可能与文献描述存在差异。这是由于生产工艺和批次不同产生的正常现象。为了使其更好的溶解，请用37℃加热试管并在超声波水浴中震动片刻。不同批次产品溶解度各有差异，仅做参考，具体以实验方案为准。

2：储存条件：粉末-20°C一般情况可以保存3年，溶于溶剂-80°C一般情况可以保存1年。不同产品及不同批次产品可能存在差异，请细致阅读产品信息，并辅助参考相关文献描述。

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