TR X NHS ester, 5-isomer

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.

Absorption and emission spectra of TR

Absorption and emission spectra of TR

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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
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