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CY5.5 hydrazide，羰基染料Cy5.5酰肼
Cy5.5 hydrazide是含羰基的近红外活性染料。酰肼可以与一些羰基化合物迅速反应，例如醛类和酮类，并能形成稳定的腙。该反应可用于标记偶联物的制备。
生物分子中的羰基基团可以在氧化应激或蛋白质的脱氨基作用之后自发的形成。或者，醛基可以通过糖蛋白分子糖残基的高碘酸氧化特异生成，例如抗体。抗体可以被高碘酸钠氧化，并且可以被Cy5.5酰肼标记，从而形成Cy5.5酰肼标记的抗体。由于抗体中的糖残基远离可变的表位结合位点，用这种方法标记抗体是很理想的。
Cy5.5是一种近红外荧光团，是Cy5®的类似物。它特别适用于对低荧光背景有要求的应用。该染料的吸收和发射波长具有*的组织穿透力，所以Cy5.5可用于体内近红外成像应用。
            
产品信息：
General properties
Appearance: dark blue powder
Molecular weight: 669.73
Molecular formula: C40H46Cl2N4O
Solubility: moderate solubility in water, good in polar organic solvents (DMF, DMSO, alcohols)
Quality control: NMR 1H, HPLC-MS (95%)
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: 684
ε, L⋅mol−1⋅cm−1: 209000
Emission maximum, nm: 710
Fluorescence quantum yield: 0.2
CF260: 0.07
CF280: 0.03
                  
Cy系列的相关产品：
N-琥珀酰亚胺脂dye nhs esters
  cyanine3 nhs ester
  cyanine3.5 nhs ester
  cyanine5 nhs ester
  cyanine5.5 nhs ester
  cyanine7 nhs ester
  cyanine7.5 nhs ester
  sulfo-cyanine3 nhs ester
  sulfo-cyanine5 nhs ester
  sulfo-cyanine5 bis-nhs ester
  sulfo-cyanine7 nhs ester 
炔烃 dye alkynes
  cyanine3 alkyne
  cyanine5 alkyne
  cyanine5.5 alkyne
  cyanine7 alkyne
  cyanine7.5 alkyne
  sulfo-cyanine3 alkyne
  sulfo-cyanine5 alkyne
  
  叠氮化物 dye azides
  cyanine3 azide
  cyanine3.5 azide
  cyanine5 azide
  cyanine5.5 azide
  cyanine7 azide
  cyanine7.5 azide
  sulfo-cyanine3 azide
  sulfo-cyanine5 azide
  sulfo-cyanine7 azide
  马来酰亚胺 dye maleimides
  cyanine3 maleimide
  cyanine5 maleimide
  cyanine5.5 maleimide
  cyanine7 maleimide
  cyanine7.5 maleimide
  sulfo-cyanine3 maleimide
  sulfo-cyanine5 maleimide
  
  伯胺 primary amine
  cyanine3 amine
  cyanine5 amine
  cyanine5.5 amine
  cyanine7 amine
  cyanine7.5 amine
  sulfo-cyanine5 amine
  sulfo-cyanine7 amine
  
  马来酰亚胺 dye maleimides
  cyanine3 maleimide
  cyanine5 maleimide
  cyanine7 maleimide
  sulfo-cyanine3 maleimide
  sulfo-cyanine5 maleimide
  
  羧酸 carboxylic acids
  cyanine3 carboxylic acid
  cyanine5 carboxylic acid
  cyanine7 carboxylic acid
  sulfo-cyanine3 carboxylic acid
  sulfo-cyanine5 carboxylic acid
  sulfo-cyanine7 carboxylic acid 
CY5.5 hydrazide，羰基染料Cy5.5酰肼