北京启维益成科技有限公司 旗下网站

生物耗材网 请登录 | 免费注册 | 联系我们 
  首 页 >> 生物试剂 >> 生化分子 >> 染料 >>
【产品名称】
 Cyanine5 NHS ester
【订购货号】
 L468717
【产品CAS号码】
 无
【规格/价格】
 
【预计到货时间】
 30 天
【产品详细说明】
【本产品仅供科学研究使用】
【更新日期】 2014-2-28  

During last years, Cyanine5 flurophore (analog of Cy5®) has become an incredibly popular label in life science research and diagnostics. Fluorophore emission has maximum in red region, where many CCD detectors have maximum sensitivity, and biological objects have low background. Dye color is very intense, therefore quantity as small as 1 nanomol can be detected in gel electrophoresis by naked eye.

This Cyanine5 NHS ester (analog to Cy5® NHS ester) is a reactive dye for the labeling of amino-groups in peptides, proteins, and oligonucleotides. This dye requires small amount of organic co-solvent (such as DMF or DMSO) to be used in labeling reaction (please see our recommended protocol for more details). This reagent is ideal for very cost-efficient labeling of soluble proteins, as well as all kinds of peptides and oligonucleotides. This reagent also works well in organic solvents for small molecule labeling. For more sophisticated targets such as easily degradable proteins, when use of DMF or DMSO is undesirable, consider using water-soluble sulfo-Cyanine5 NHS ester which does not require co-solvent, and has very similar fluorescent properties.


cy5-nhs-esterCy5 NHS ester structure

 

Cyanine5 fluorophore is compatible with various instrumentation including many fluorescent microscopes, imagers, scanners, and fluorescence readers. A number of various Cyanine5 analogs exist - Cyanine5 NHS ester can replace activated esters of Cy5®, Alexa Fluor 647, and DyLight 649.

Cy5 excitation and emission spectra

General properties

Appearance: dark blue powder
Molecular weight: 616.19
Molecular formula: C36H42ClN3O4
CAS number: 1032678-42-4, 350686-88-3
Solubility: good in polar (DMSO, DMF) and chlorinated (DCM, chlroform) organic solvents, low solubility in water
Quality control: NMR 1H (95%) and 13C, TLC, functional testing
Storage conditions: Storage: 24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.

Spectral properties

Excitation maximum, nm: 646
Extinction coefficient at excitation maximum, Lmol-1cm-1: 250000
Emission maximum, nm: 662
Fluorescence quantum yield: 0.2
打印此页】 【返回】【顶部】【关闭

【相关产品】