5-FAM

Overview
Catalog #	bs-75997c-25mg
Product Name	5-FAM
Specifications
Storage Buffer	Solid
Storage Condition	Stable for 2 years after receipt when stored at +4°C.
Target
Product Information	CAS Number: 76823-03-5 Molecular formula: C21H12O7 Molecular weight: 376.32 Purity: ≥99% (HPLC) Appearance: Yellow-orange solid. Solubility: Soluble in water, DMSO or DMF. InChiKey: VPMWLNJETPKSSC-UHFFFAOYSA-N SMILES: OC(=O)C1=CC=C(C(=C1)C(O)=O)C1=C2C=CC(=O)C=C2OC2=CC(O)=CC=C12
Description	The amine-reactive fluorescein derivatives are probably the most common fluorescent derivatization reagents for covalently labeling proteins. Carboxyfluorescein is better retained in cells than is fluorescein, its pKa of ~6.5 is lower than the cytosolic pH of most cells (pH ~6.8-7.4). Carboxyfluorescein is commonly employed as a polar tracer.