DusQ® 3 NHS ester

DusQ® 3 NHS esters

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.

Download in
ChemDraw format

Absorption spectrum of DusQ 3

Recommended protocol

NHS Ester Labeling of Biomolecules Containing Primary Amino Groups

Calculator

Protein labeling calculator

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

This Product is offered and sold for research purposes only. It has not been tested for safety and efficacy in food, drug, medical device, cosmetic, commercial or any other use. Supply does not express or imply authorization to use for any other purpose, including, without limitation, in vitro diagnostic purposes, in the manufacture of food or pharmaceutical products, in medical devices or in cosmetic products.