Cyanine5.5 hydrazide，羰基染料Cy5.5酰肼
Cyanine5.5 hydrazide is a carbonyl-reactive near infrared dye. Hydrazides quickly react with carbonyl compounds, such as aldehydes and ketones, and form stable hydrazones. This reaction is useful for the preparation of labeled conjugates.
Carbonyl groups in biomolecules can form spontaneously after oxidative stress or deamination of proteins. Alternatively, aldehyde groups can be specifically generated by periodate oxidation of sugar residues of glycoproteins, for example antibodies. Antibodies can be oxidized by sodium periodate and labeled with Cyanine5.5 hydrazide to form Cyanine5.5 labeled antibodies. Since sugar residues in antibodies are located far from variable, epitope-binding site, this method is particularly good for the labeling of antibodies.
Cyanine5.5 is a near infrared fluorophore, an analog of Cy5.5®. It is particularly suitable for the applications which require low fluorescence background. The absorption and emission wavelength of the dye exhibit significant tissue penetration, so Cyanine5.5 is suitable for in vivo NIR imaging applications.
结构式：
            
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
                  
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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 
Cyanine5.5 hydrazide，羰基染料Cy5.5酰肼