Home Products Dye Labeling Cyanine Labeling Cyanine-PEG-acid

Cyanine-PEG-acid is a PEG derivative containing cyanine dyes and a free terminal carboxyl acid. Terminal carboxylic acid can react with primary amine groups in the presence of of activators (e.g. EDC, or DCC) to form a stable amide bond. The hydophilic PEG spacer increases solubility in aqueous media and membrane impermeability.

The following reagents are available in BroadPharm. Please click catalog number to see purity specificationsand fluorescence information.

Catalog No. Name Structure M.W. Purity Pricing


BP-23004 N-(m-PEG4)-N'-(PEG2-acid)-Cy5 N-(m-PEG4)-N'-(PEG2-acid)-Cy5 741.4 97% Pricing
BP-23018 N-(m-PEG4)-N'-(PEG4-acid)-Cy5 N-(m-PEG4)-N'-(PEG4-acid)-Cy5 829.5 98% Pricing
BP-23010 N-(m-PEG9)-N'-(PEG5-acid)-Cy5 N-(m-PEG9)-N'-(PEG5-acid)-Cy5 1093.8 97% Pricing
BP-23046 N-(m-PEG4)-N'-(acid-PEG3)-Benzothiazole Cy5 N-(m-PEG4)-N'-(acid-PEG3)-Benzothiazole Cy5 765.4 98% Pricing
BP-23044 N-(m-PEG4)-3,3-Dimethyl-3H-indole-N'-(acid-PEG3)-Benzothiazole Cy5 N-(m-PEG4)-3,3-Dimethyl-3H-indole-N'-(acid-PEG3)-Benzothiazole Cy5 775.4 98% Pricing
BP-23036 N-methyl-N'-methyl-O-(m-PEG4)-O'-(acid-PEG5)-Cy5 N-methyl-N'-methyl-O-(m-PEG4)-O'-(acid-PEG5)-Cy5 933.6 98% Pricing
BP-23029 N-(azide-PEG3)-N'-(PEG4-acid)-Cy5 N-(azide-PEG3)-N'-(PEG4-acid)-Cy5 840.5 98% Pricing
BP-23033 Bis-(N,N'-carboxyl-PEG4)-Cy5 Bis-(N,N'-carboxyl-PEG4)-Cy5 887.5 98% Pricing
BP-23047 N,N'-bis-(acid-PEG3)-Benzothiazole Cy5 N,N'-bis-(acid-PEG3)-Benzothiazole Cy5 779.4 98% Pricing