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Tide Quencher™ 2 succinimidyl ester
TQ2 SE
TQ2 is designed to be a superior quencher to FAM, HEX, TET, JOE, TF2 and rhodamine 6G. TQ2 has (a). much stronger absorption; (b). much higher quenching efficiency; and (c). versatile reactive forms with desired solubility for labeling oligonucleotides and peptides. This TQ2 product is primarily used for labeling peptides. It is also used for post-labeling of amino-modified oligonucleotides.
<p>Dye NHS esters (or succinimidyl esters) are the most popular tool for conjugating dyes to a peptide, protein, antibody, amino-modified oligonucleotide or nucleic acid. NHS esters react readily with the primary amines (R-NH<sub>2</sub>) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The resulting dye conjugates are quite stable.</p>
<p>Dye NHS esters (or succinimidyl esters) are the most popular tool for conjugating dyes to a peptide, protein, antibody, amino-modified oligonucleotide or nucleic acid. NHS esters react readily with the primary amines (R-NH<sub>2</sub>) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The resulting dye conjugates are quite stable.</p>
protocol
Protocol
sds
SDS
COA
CatalogSize
Price
Quantity
221025 mg
Price
 
Physical properties
Molecular weight479.55
SolventDMSO
Spectral properties
Absorbance (nm)516
Correction factor (260 nm)0.100
Correction factor (280 nm)0.12
Extinction coefficient (cm -1 M -1)
21000
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
UNSPSC12352200
Documents
Protocol
Safety Data Sheet
Certificate of Analysis
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Page updated on October 19, 2025