DusQ® 3 NHS ester

Cat. # Quantity Price Lead time
23D20 5 mg
– 
in stock
43D20 25 mg
$315
in stock
53D20 50 mg
$580
in stock
63D20 100 mg
$885
in stock
Found better price? Let us know and we will propose the way forward!

DusQ® 3 NHS ester is a dark, far-red nonfluorescent DusQ 3 derivative for labeling with the primary amines of proteins, modified oligonucleotides. The labeling with covalent amide bond occurs most efficiently at pH 7-9.

DusQ 3 is used as an acceptor for preparation of fluorogenic dual-labeled probes, for qPCR, sequencing and other fluorescence-quenched system applications.

Due to quenching range characterised as 620-730 nm DusQ 3 is useful as an acceptor in fluorescence resonance energy transfer (FRET) combined with far-red to near-IR emitting dyes such as Cyanine5, Cyanine5.5, AF 647.

Absorption spectrum of DusQ 3

Absorption spectrum of DusQ 3

Customers also purchased with this product

Biotin-X-NHS ester

Biotin derivative with C6-spacer to reduce steric effect when binding amino acids, peptides, or proteins by reacting with primary amines.

Cyanine5 alkyne

Cyanine5 alkyne is an alkyne dye for click chemistry labeling of biomolecules.

sulfo-Cyanine5.5 NHS ester

Water soluble, sulfonated, far-red sulfo-Cyanine5.5 dye in the form of NHS ester.

General properties

Appearance: dark powder
Molecular weight: 817.77
Molecular formula: C39H42N7O4
Solubility: good in DMF, DMSO
Quality control: NMR 1H and HPLC-MS (95+%)
Storage conditions: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Desiccate. Avoid prolonged exposure to light.
MSDS: Download
Product specifications

Spectral properties

Excitation/absorption maximum, nm: 657
ε, L⋅mol−1⋅cm−1: 45500
Your item has been added. View your cart or proceed to checkout
The count of items is incorrect.