计算溶液所需的质量、体积或浓度。
BioReagent,生物染色剂,用于显微镜,适用于荧光分析 级 提供 ≥98%(HPLC) 纯度,适用于对基线干扰要求严格的色谱和分析工作流程。
避光,-20°C储存,干燥,避免反复冻融。超低温运输 。请查阅批次 COA 获取详细规格。
SDS、COA、产品数据表及规格说明书均可下载。可通过批号查询获取批次 COA。
在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
AF647 NHS 酯是一种远红光荧光染料,光稳定性良好,在长时间实验过程中荧光信号衰减较慢,能保持较长时间的稳定荧光信号,有利于长时间追踪和观察生物分子,具有较高的量子产率。这种染料的活化酯基团可以与目标生物分子上的氨基(主要是伯胺)反应,生成稳定的酰胺键,从而将 AF647 荧光分子标记到生物大分子上。
光谱性质:
最大激发 / 吸收波长:651 nm
最大发射波长:671 nm
摩尔消光系数 (ε):265000
荧光量子产率 (Φ):0.33
荧光产品使用注意事项:
1、活性酯易水解,从冰箱取出后,请确认在干燥的环境放至室温后再开封。由于试剂量小,开封前,请轻弹瓶壁几次,以保证粉末落入瓶底。
2、第一次使用时, 建议母液即配即用。试剂溶解后尽可能在短时间内使用,以保证实验效果。
3、溶解液 DMSO 需要保证新鲜无水,否则将会导致活性酯水解,影响实验效果。
4、已配置好的母液遇水易分解,如果不能一次用完,建议分装保存,例如分装成 5-8 μl/管,用封口膜封口,并用铝箔纸包裹,放在一个密闭性能好的塑料袋中,放入干燥剂,在≤-20℃密封避光保存。
5、建议您在正式实验前先摸索一下细胞量、荧光染料(探针)的合适浓度及孵育时间,找到最佳实验条件。
AF647 NHS Ester is a far-red fluorescent dye with good photostability. Its fluorescence signal decays slowly during long-duration experiments and maintains stable fluorescence for extended periods, which is beneficial for long-term tracking and observation of biomolecules. It has a high fluorescence quantum yield. The activated ester group of this dye can react with amino groups (primarily primary amines) on target biomolecules to form stable amide bonds, thereby labeling biomacromolecules with AF647 fluorescent moieties.
Spectral properties:
Excitation/absorption maximum: 651 nm
Emission maximum: 671 nm
Extinction coefficient (ε): 265000
Fluorescence quantum yield (Φ): 0.33
Precautions for Fluorescent Products:
1. Activated esters are prone to hydrolysis. After taking out from the refrigerator, allow the vial to warm to room temperature in a dry environment before opening. Since the reagent quantity is small, gently tap the vial several times before opening to ensure all powder falls to the bottom.
2. It is recommended to prepare the stock solution fresh at first use. Use the dissolved reagent as soon as possible to guarantee experimental performance.
3. Fresh anhydrous DMSO is required for dissolution. Water contamination will cause hydrolysis of the activated ester and compromise experimental results.
4. The prepared stock solution is susceptible to hydrolysis upon exposure to water. If not fully consumed in one experiment, aliquot the solution (e.g., 5–8 μL per tube), seal with parafilm, wrap with aluminum foil, place in a well-sealed plastic bag containing desiccant, and store hermetically at ≤ -20°C protected from light.
5. It is recommended to optimize cell density, dye/probe concentration and incubation time in preliminary tests before formal experiments to determine optimal experimental conditions.
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