Fluorescein-PEG4-Acid - 96%, high purity , CAS No.1807518-76-8

Item Number

F595185

Grouped product items
SKU	Size	Availability	Price
F595185-25mg	25mg	Available within 8-12 weeks(?) Production requires sourcing of materials. We appreciate your patience and understanding.	$1,081.90
F595185-50mg	50mg	Available within 8-12 weeks(?) Production requires sourcing of materials. We appreciate your patience and understanding.	$1,681.90
F595185-250mg	250mg	Available within 8-12 weeks(?) Production requires sourcing of materials. We appreciate your patience and understanding.	$2,941.90

Fluorescein-PEG

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Basic Description

Specifications & Purity	96%
Storage Temp	Store at -20°C
Shipped In	Dry ice
Product Description	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.

Canonical SMILES

C1=CC2=C(C=C1NC(=S)NCCOCCOCCOCCOCCC(=O)O)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O

Isomeric SMILES

C1=CC2=C(C=C1NC(=S)NCCOCCOCCOCCOCCC(=O)O)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O

PubChem CID

Molecular Weight

654.7

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Basic Description