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Texas Red TCO
Single isomer
The tetrazine-trans-cyclooctene (TCO) ligation constitutes a non-toxic biomolecule labeling method of unparalleled speed. A tetrazine-functionalized molecule reacts with a TCO-functionalized molecule, forming a stable conjugate via a dihydropyrazine moiety. This inverse electron demand cycloaddition reaction has gained popularity due to the potential for extremely fast cycloaddition kinetics with TCO as the dienophile. AAT Bioquest offers a group of tetrazine- and TCO-containing dyes for exploring various biological systems that can use this powerful click reaction. Texas Red-TCO can be readily used to label tetrazine-modified biological molecules for fluorescence imaging and other fluorescence-based biochemical analysis. It is widely used for labeling tetrazine-modified peptides, proteins and oligos etc.
Chemical structure for Texas Red TCO *Single isomer*.
Chemical structure for Texas Red TCO *Single isomer*.
CatalogSize
Price
Quantity
8991 mg
Price
 
Physical properties

Molecular weight815.01
SolventDMSO
Spectral properties

Correction factor (260 nm)0.23
Correction factor (280 nm)0.36
Correction factor (565 nm)0.4472
Extinction coefficient (cm -1 M -1)
116000
1
Excitation (nm)586
Emission (nm)603
Quantum yield
0.97
1
0.93
2
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12171501
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Page updated on November 23, 2025