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Product introduction

Fluorescein-PEG4-Acid is a xanthene dye with excitation/emmission maximum 494/517 nm 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. It be used as quantum yield standard. Hydophilic PEG spacer increases solubility in aqueous media and reduces steric hindrance during binding.

Specs ⸢ View details ⸥

Chinese name

荧光素-PEG4-酸

English name

Fluorescein-PEG4-Acid

Chinese alias

English alias

CAS number

1807518-76-8

molecular formula

C32H34N2O11S

molecular weight

654.7 g/mol

Exact mass

≥96%

PSA

206.000 Å²

Logp

1.900

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