
Source | M.W. | 482.19 | CAS No. | 391210-10-9 | |
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Structural Info | N-[(2R)-2,3-DIHYDROXYPROPOXY]-3,4-DIFLUORO-2-[(2-FLUORO-4-IODOPHENYL)AMINO]-BENZAMIDE![]() | ||||
Formulation | Powder | ||||
Reconstitution | Before reconstitution, we recommend a brief spin todrive down any material dislodged from the bottom of the tube. The compound is soluble in DMSO. | ||||
Stability | The powder is stable for at least 2 year if stored at-20 °C. The dissolved compound isstable for at least 1 month at 4 °C, but should be stored in aliquots at-20 °C for longer term. Protectfrom light. | ||||
Purity | Greater than 98% as determined by LC/MS analysis.LC/MS and/or NMR data available upon request. | ||||
Biological Activity | |||||
Country of Origin | USA |
A selective inhibitor against purified MEK,exhibiting a Ki of 1 nM against activated MEK1 and MEK2. It has been shown that 1 µM PD0325901 combined with 3 µM CHIR99021 (2i)prevents cell differentiation and sustains self-renewal of murine embryonicstem cells.N-[(2R)-2,3-DIHYDROXYPROPOXY]-3,4-DIFLUORO-2-[(2-FLUORO-4-IODOPHENYL)AMINO]-BENZAMIDERef: Barret, S.D., Bridges, A.J., Dudley,D.T., et al. Thediscovery of the benzhydroxamate MEK inhibitors CI-1040 and PD 0325901. Bioorg Med Chem Lett 186501-6504, 2008.Ying, Q., Wray, J., Nichols, J., et al. The ground state ofembryonic stem cell self-renewal. Nature 453 519-524, 2008.
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TAE是使用最广泛的缓冲系统。其特点是超螺旋在其中电泳时更符合实际相对分子质量(TBE中电泳时测出的相对分子质量会大于实际分子质量),且双链线状DNA在其中的迁移率较其他两种缓冲液快约10%,电泳大于13kb的片段时用TAE缓冲液将取得更好的分离效果,此外,回收DNA片段时也易用TAE缓冲系统进行电泳。TAE的缺点是缓冲容量小,长时间电泳(如过夜)不可选用,除非有循环装置使两极的缓冲液得到交换。 50×TAE Buffer 配制方法: 1. 称量Tris 242g,Na2EDTA.2H2O 37.2g 于1L烧杯中; 2.向烧杯中加入约800ml去离子水,充分搅拌均匀; 3加入57.1ml的冰乙酸,充分溶解; 4.加去离子水定容至1L后,室温保存。向左转|向右转
1. Buffer中离子浓度过大,甘氨酸或者Tris碱有可能疏忽多加了
2.没有加相应浓度的SDS
3.电泳周围温度高,也是一个原因
此外,我们常常用“电泳法”判断液体的性质,是胶体还是溶液。在高中化学中我们就用过这种方法判断给定的液体是否为胶体。MOPS电泳缓冲液、胚胎干细胞培养生长因子、动物肝细胞分离培养试剂盒、结晶紫细胞群落染色试剂盒、MFN-2蛋白表达检测试剂盒、血红细胞溶解液、磷酸缓冲盐溶液、Hanks平衡盐粉剂、胰蛋白酶溶液、
低离子强度时,迁移率快。但离子强度过低,缓冲液的缓冲容量小,不易维持pH恒定。高离子强度时迁移率慢,因此为了获得更快的反应速度,在缓冲容量允许的范围内,离子强度应该尽可能小。

