ATTO488TM-dextran is manufactured by reacting a selected dextran fraction with an ATTO488 derivative. The product is purified from reagents, solvents and by-products. The product is supplied as an orange powder which is soluble in water. The molecular weight is measured by gel permeation chromatography (GPC). The degree of substitution is between 0.001-0.008. The absorption maximum is 502 nm and the emission maximum is 524 nm. The fluorophore Atto 488 displays strong absorption, high quantum yield and photo-stability. Atto 488-dextran is stable when stored in well-sealed containers at room temperature in the dark.
ATTO dye is a trademark of ATTO-Tec.