FLUORESCENT RED 630 REACTIVE

Amino-reactive biolabel excited by red lasers (He/Ne; 633 nm) and diode lasers (635-650 nm). The chromophore is a bridged hemicyanine. Quantum yield is fairly low in aqueous media, but increases up to one order of magnitude if coupled to a target protein; Molar absorption 120,000 M^-1 cm^-1, λ_abs: (conjugate) 645 nm; λ_em: (conjugate) 660 nm