标记羰基荧光染料Cy7 hydrazide，Cy7酰肼
Hydrazide derivative of Cyanine7, a NIR fluorescent dye, an analog of Cy7®.
This variety of heptamethine fluorophore contains a six-membered ring rigidizing the polymethine chain which allows to increase quantum yield by 20% compared to parent structure.
Hydrazide reacts quickly and smoothly with aldehydes and ketones yielding stable hydrazone products. This reaction is also good for the labeling of glycoproteins after periodate oxidation.
产品信息：
General properties：
Appearance: green powder
Mass spec M+ increment: 544.8
Molecular weight: 635.70
Molecular formula: C37H48Cl2N4O
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: 750
ε, L⋅mol−1⋅cm−1: 199000
Emission maximum, nm: 773
Fluorescence quantum yield: 0.3
CF260: 0.022
CF280: 0.029
                  
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 
标记羰基荧光染料Cy7 hydrazide，Cy7酰肼