QSY7 Quencher, Succinimidyl Ester

QSY7 quencher succinimidyl ester is a nonfluorescent acceptor dye for preparation of peptide and oligonucleotide FRET probes.

Features

• Fluorescence quantum yields <0.001 in aqueous solution;
• Absorption spectra of the conjugates are insensitive to pH between 4 and 10;
• Efficient quenching of the fluorescence emission of donor dyes including blue-fluorescent coumarins, green- or orange-fluorescent dyes, and red-fluorescent dye conjugates;
• Quenching of most green and red fluorophores is more effective at far greater distances than is possible with dabcyl quenchers.

Specifications

Reactivity:	Primary amine
Abs maximum:	560 nm
Extinction coefficient:	90,000 cm-1M-1
Solubility:	DMSO, DMF
Molecular Formula:	C43H39ClN4O7S
Molecular Weight:	791.32
CAS Number:	304014-12-8
Storage Conditions:	-20 ℃, protect from light
Shipping Condition:	Room Temperature
Applications   FRET probe.