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Near-IR CF® Dye Free Acids

Non-reactive, free acid forms of the near-infrared (NIR) CF® dyes that can be used as controls for the corresponding dye-conjugates. Available with the following CF® Dyes: CF®680, CF®750, CF®770, and CF®790.

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Catalog #
1 mg
0.25 umol
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Product Description

NIR CF® dye free acids are non-reactive molecules and cannot be used for labeling. They can be used as reference standards or controls for corresponding NIR CF® dye-conjugates such as antibodies, proteins, peptides etc. in cell-based and in vivo assays.

  • Non-reactive, free acid forms of the NIR CF® dyes
  • Used as controls for corresponding NIR CF® dye conjugates
  • Applications:

– In vitro cell-based assays to monitor binding of a dye-labeled agent, to evaluate binding specificity, and validate optical agents for in vivo administration.

– In vivo imaging to evaluate the behavior and clearance of the dye itself,  kinetics of dye clearance from the animal’s body or retention of dye in certain organs or sites (e.g., liver or kidneys).

Learn more about Biotium’s superior Near-IR CF® dyes.

Near-IR CF dye free acids: Product & SKU Summary

CF®680 free acidCF®680681/698 nm1 mg92070Purchase 92070
CF®750 free acidCF®750755/777 nm1 mg92071Purchase 92071
CF®770 free acidCF®770770/797 nm1 mg92066Purchase 92066
CF®790 free acidCF®790784/806 nm0.25 μmol92159Purchase 92159


Download a list of CF® dye references.


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