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PerKit™ Small Molecule Acid by Cy3

  • Small molecule acid labeling by Cyanine 3 dye
Made to order, usually ships within 3-5 days
Calculated at checkout
Describe your small molecule:

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Or upload your small molecule structure:

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Product Description


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This is a Personalized conjugation kit (PerKit™) for Cyanine 3 dye labeling of a small molecule containing carboxylic acid (-COOH) functional groups (1 mg scale). Using the kit components, the user converts the carboxylic acid (not supplied) to an activated N-hydroxysuccinimide ester (NHS ester), followed by reaction with an equivalent amount of the amine cyanine 3 dye. 

Requirement for Small Molecule

  • Preferably > 90% pure
  • Absence of primary or secondaryamine (-NH2) groups
  • Preferably contains only one non-hindered aliphatic carboxylic acid (-COOH)
  • For molecule containing aromatic carboxylic acid, hindered aliphatic carboxylic acid, or hydroxyl (-OH) groups, please consult CellMosaic first before placing the order.

Key Features of this PerKit™

  • Offers a simple and easy way to label small molecules with COOH: 2hr preparation and <30 minutes hands-on time
  • Quantitative reaction with stable bond
  • Options to choose tailored services at CellMosaic prior and after conjugation

Prior conjugation, you can upload your small molecule information when you place your order. CellMosaic will general a PerKit™ sheet containing calculation, chemical structure, MW of your final conjugate, and recommendation for the conjugation if there is some special feature of your molecule. 

After conjugation, you can choose to send your sample to CellMosaic for HPLC and MS analysis.




Labeling Chemistry



Spectral Properties

Excitation maximum, nm: 555
ε, L⋅mol−1⋅cm−1: 150000
Emission maximum, nm: 570
Fluorescence quantum yield: 0.31 

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