Cysteine thiol probe  ≥98%

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包装规格:5mg 10mg 50mg 100mg in glass bottle
溶解性:溶于DMSO(250mg/mL 超声)
产品描述:基本信息 产品编号: C11609 产品名称: Cysteine thiol probe CAS: 1947408-74-3   储存条件 粉末 -20℃ 四年     分子式: C11H12BrNO3S 溶于液体 -80℃ 两年 分子量 318.19 -20℃ 一个月 化学名:  methyl (2R)-2-[(4-bromobenzoyl)amino]-3-sulfanylpropanoate Solubility (25°C):   体外:   DMSO 250mg/mL(785.69mM;Need ultrasonic) Ethanol   Water   体内(现配现用): 1.请依序添加每种溶剂:10% DMSO→40% PEG300→5% Tween-80→45% saline Solubility:≥2.08mg/mL(6.54mM);Clear solution 此⽅案可获得≥2.08mg/mL(6.54mM,饱和度未知)的澄清溶液。以1mL⼯作液为例,取100μL20.8mg/mL的澄清DMSO储备液加到400μL PEG300中,混合均匀;向上述体系中加⼊50μL Tween-80,混合均匀;然后继续加⼊450μL⽣理盐⽔定容⾄1mL。 2.请依序添加每种溶剂:10% DMSO→90% corn oil Solubility:≥2.08mg/mL(6.54mM);Clear solution 此⽅案可获得≥2.08mg/mL(6.54mM,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1mL⼯作液为例,取100μL20.8mg/mL的澄清DMSO储备液加到900μL⽟⽶油中,混合均匀。 <1mg/ml表示微溶或不溶。 普西唐提供的所有化合物浓度为内部测试所得,实际溶液度可能与公布值有所偏差,属于正常的批间细微差异现象。 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。   制备储备液   浓度   溶液体积 质量   1mg   5mg   10mg 1mM 3.1428mL 15.7139mL 31.4278mL 5mM 0.6286mL 3.1428mL 6.2856mL 10mM 0.3143mL 1.5714mL 3.1428mL   生物活性 产品描述 一种基于硫醇的探针,旨在标记亲电子的天然产物。Cysteine Thiol Probe 具有理想药效团探针的每个特征,并具有发色团。Cysteine Thiol Probe 能够结合基于烯酮,β-内酰胺和 β-内酯的亲电子代谢物。 体外研究 Cysteine Thiol Probe (Probe 1) reacts much more readily with β-lactam- and β-lactone-based electrophilic natural products, and its reactivity with epoxide-based electrophilic natural products is poor. And probe 2 reacts much faster with epoxidecontaining natural products. This orthogonal reactivity allows them to be employed in extracts simultaneously. Since Cysteine Thiol Probe is brominated and probe 2 is chlorinated, the isotopic patterns of labeled natural products point toward their structural origin. Competition experiments using Cysteine Thiol Probe and 2 indicated that brominated Cysteine Thiol Probe reacted exclusively with the β-lactam in penicillin G and the β-lactone in salinosporamide A while chlorinated probe 2 alone reacted with the epoxide in salinamide A
保存条件:-20℃