TR-X-NHS ester, 5-isomer

NHS esters Protein labeling TR

Cat. #	Quantity	Price	Lead time
1V220	1 mg	$125	in stock
2V220	5 mg	$325	in stock
4V220	25 mg	$510	in stock
5V220	50 mg	$895	in stock
6V220	100 mg	$1490	in stock

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TR is a sulfonated analog of ROX dye with similar spectral properties and emission in the red region of the spectrum. This derivative is a dye with an aminohexanoic acid linker that provides spacing between the fluorophore and the biomolecule to prevent undesired interactions.

NHS ester is reactive towards amine groups that are ubiquitous in proteins, peptides and other labeling targets.

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Absorption and emission spectra of TR

Recommended protocol

NHS Ester Labeling of Biomolecules Containing Primary Amino Groups

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Protein labeling calculator

General properties

Appearance:	dark colored solid
Molecular weight:	816.95
CAS number:	178623-11-5
Molecular formula:	C₄₁H₄₄N₄O₁₀S₂
Solubility:	good in polar organic solvents
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.
MSDS:	Download
	Product specifications

Spectral properties

Excitation/absorption maximum, nm:	582
ε, L⋅mol⁻¹⋅cm⁻¹:	98000
Emission maximum, nm:	600
Fluorescence quantum yield:	0.79

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.