
NK 252Nrf2 activator |
Sample solution is provided at 25 µL, 10mM.
































Quality Control & MSDS
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- Purity = 98.00%
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- MSDS (Material Safety Data Sheet)
Chemical structure


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Cas No. | 1414963-82-8 | SDF | Download SDF |
Chemical Name | N-[5-(2-furanyl)-1,3,4-oxadiazol-2-yl]-N"-(2-pyridinylmethyl)-urea | ||
Canonical SMILES | O=C(NC1=NN=C(C2=CC=CO2)O1)NCC3=CC=CC=N3 | ||
Formula | C13H11N5O3 | M.Wt | 285.3 |
Solubility | ≤14mg/ml in DMSO;20mg/ml in dimethyl formamide | Storage | Store at -20°C |
Physical Appearance | A crystalline solid | Shipping Condition | Evaluation sample solution : ship with blue ice.All other available size:ship with RT , or blue ice upon request |
General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. |
NK 252 is an Nrf2 activator [1][2].
Nuclear factor-erythroid-2-related factor 2 (Nrf2), a transcription factor that activates antioxidant response elements (AREs), plays a central role in stimulating expression of various antioxidant-associated genes in the cellular defense against oxidative stress. Keap1 is a cytosolic repressor of Nrf2 that retains Nrf2 in the cytoplasm [1].
NK 252 is an Nrf2 activator that interacts directly with the domain containing the Nrf2-binding site of Keap1. In Huh-7.5 cells, NK 252 activated the NQO1-ARE in a dose-dependent way, suggesting NK-252 has potential as Nrf2 activator in hepatic cells. NK-252 also protected Huh-7 cells against H2O2-induced cytotoxicity [1]. NK-252 was effective not only in circumventing the drug resistance, but also in potentiating the action of antitumor drugs against drug-sensitive tumors [2].
In nonalcoholic steatohepatitis (NASH) model rats, NK-252 decreased fibrosis scores and significantly reduced liver fibrosis area in a dose-dependent way. NK-252 also significantly reduced plasma ALT levels and plasma AST levels, suggesting the hepatoprotective effects of NK-252. NK-252 increased NQO1 gene expression and exhibited antioxidant property in the livers of rats. NK-252 reduced fibrogenic gene expression and inhibited further progression of established fibrosis [1].
References:[1]. Shimozono R, Asaoka Y, Yoshizawa Y, et al. Nrf2 activators attenuate the progression of nonalcoholic steatohepatitis-related fibrosis in a dietary rat model. Mol Pharmacol. 2013 Jul;84(1):62-70.[2]. Kiue A, Sano T, Naito A, et al. Reversal by two dihydropyridine compounds of resistance to multiple anticancer agents in mouse P388 leukemia in vivo and in vitro. Jpn J Cancer Res. 1990 Oct;81(10):1057-64.
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变阻法计数在大多数细胞计数器中是利用小孔管换能器装置实现的。
在仪器的取样杯内装有一根吸样管,吸样管下部开有一个小孔(宝石制作),因此也叫做小孔管。小孔管内外各置一只铂金电极,两电极间施加一个恒定的电流。测试时,先将待测血液用洁净的电解液充分稀释,使血细胞在电解液中成为游散状态,然后在小孔管上端施以负压,在负压的抽吸下,混有血细胞的电解液便被均匀地抽进小孔管。当血细胞通过小孔时,排开了等体积的电解液,使电解液的等效电阻瞬间变大,这个变大的电阻在恒流源的作用下引起一个等比例增大的电压。当细胞离开小孔附近后,电解液的等效阻值又恢复正常,直到下一个细胞到达小孔。这样血细胞连续地通过小孔,就在电极两端产生一连串电压脉冲。脉冲的个数与通过小孔的细胞个数相当,脉冲的幅度与细胞体积成正比。
首先,电子细胞技术仪是机器计数,全自动计数,快速准确,比人工有效率多了,有条件可以购买一台计数器咯~~bodboge是我们在用的机器
其次,细胞计数板需要人工操作,取样什么的都要注意,不然就会有偏差,而且速度还很慢
所以,总的来说,肯定是机器计数会比较准确
这样的回答可能没分,好和不好都是比较出来的,一群国产的放在一起比总有个性能比较均衡,比较突出性价比好的,
还是没有和说那个厂家的好桂林的呢好像是优利特这个厂家在做,特康的前身呢就是百特,现在的百特呢基本上是在做试剂,这些东西呢。
也搜索的到的,不过答案还是比较接近的,但想知道的是国产那个厂家生产的比较好,而只回答了一半就和介绍了下国产的血球分析仪有那个几个大的厂家,没有和区分那个最好那个第二那个次点,或许一堆鸡蛋里实在挑不出骨头。
具所知呢迈瑞的好点特康实力没有迈瑞好,迈瑞吸引了一批外资在搞研发,桂林的呢好像有个优利特现在出血分析仪,他做的尿分析仪市场的占有还可以,血的反应不是很强烈。
实在是想找个内行的给比较下。

