Name: Tide Fluor™ 7WS, succinimidyl ester [TF7WS SE]*Superior replacement for Cy7*
Brand: AAT Bioquest
SKU: 2333
Price: 115 USD
Availability: InStock

Tide Fluor™ 7WS, succinimidyl ester

TF7WS SE; Superior replacement for Cy7

Tide Fluor™ 7WS (TF7WS) family has the spectral properties similar to those of Cy7, IRDye 800 and Alexa Fluor 750. Their fluorescence is pH-independent from pH 3 to 11. These characteristics make this new dye family more robust to pH-sensitive assays. In some cases TF7-labeled peptides and nucleotides exhibit stronger fluorescence and higher photostability than the ones labeled with Cy7, IRDye 800 and Alexa Fluor 750. In pairing with our Tide Quencher™ 7WS (TQ7WS), a variety of FRET peptides and nucleotides can be developed for detecting proteases and molecular beacons with enhanced sensitivity and stability.

<p>Fluorescent 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

SDS

COA

Catalog	Size	Price	Quantity
2333	1 mg	Price

Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of Tide Fluor™ 7WS, succinimidyl ester [TF7WS SE]*Superior replacement for Cy7* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	92.903 µL	464.516 µL	929.031 µL	4.645 mL	9.29 mL
5 mM	18.581 µL	92.903 µL	185.806 µL	929.031 µL	1.858 mL
10 mM	9.29 µL	46.452 µL	92.903 µL	464.516 µL	929.031 µL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
mg	÷	1076.39 g/mol	=	mL	x	mM	=	mmol

Citations

View all 8 citations: Citation Explorer

Inhibiting fibronectin polymerization alleviates kidney injury due to ischemia/reperfusion

Authors:

Bowers, Stephanie LK and Davis-Rodriguez, Stephanie and Thomas, Zachary M and Rudomanova, Valeriia and Bacon, W Clark and Beiersdorfer, Alex and Ma, Qing and Devarajan, Prasad and Blaxall, Burns C

Journal:

American Journal of Physiology-Renal Physiology (2019)

A mechanistic model to predict effects of cathepsin B and cystatin C on β-amyloid aggregation and degradation

Authors:

Perlenfein, Tyler J and Murphy, Regina M

Journal:

Journal of Biological Chemistry (2017): jbc--M117

Real-Time Detection of a Self-Replicating RNA Enzyme

Authors:

Olea, Charles and Joyce, Gerald F

Journal:

Molecules (2016): 1310

Maternal serum glycosylated fibronectin as a point-of-care biomarker for assessment of preeclampsia

Authors:

Rasanen, Juha and Quinn, Matthew J and Laurie, Amber and Bean, Eric and Roberts, Charles T and Nagalla, Srinivasa R and Gravett, Michael G

Journal:

American journal of obstetrics and gynecology (2015): 82--e1

Development of Multi-Parametric/Multimodal Spectroscopy Apparatus for Characterization of Functional Interfaces

Authors:

Zhou, Lang and Arugula, Mary and Easley, Christopher J and Shannon, Curtis and Simonian, Aleks and r, undefined

Journal:

ECS Transactions (2015): 9--16

References

View all 25 references: Citation Explorer

Evaluation of tetramethylrhodamine and black hole quencher 1 labeled probes and five commercial amplification mixes in TaqMan real-time RT-PCR assays for respiratory pathogens

Authors:

Yang GP, Erdman DD, Tondella ML, Fields BS.

Journal:

J Virol Methods (2009): 288

Time-resolved FRET method for typing polymorphic alleles of the human leukocyte antigen system by using a single DNA probe

Authors:

Andreoni A, Bondani M, Nardo L.

Journal:

Photochem Photobiol Sci (2009): 1202

Tumor-specific detection of an optically targeted antibody combined with a quencher-conjugated neutravidin "quencher-chaser": a dual "quench and chase" strategy to improve target to nontarget ratios for molecular imaging of cancer

Authors:

Ogawa M, Kosaka N, Choyke PL, Kobayashi H.

Journal:

Bioconjug Chem (2009): 147

The detection of platelet derived growth factor using decoupling of quencher-oligonucleotide from aptamer/quantum dot bioconjugates

Authors:

Kim GI, Kim KW, Oh MK, Sung YM.

Journal:

Nanotechnology (2009): 175503

Development of a cell-based hepatitis C virus infection fluorescent resonance energy transfer assay for high-throughput antiviral compound screening

Authors:

Yu X, Sainz B, Jr., Uprichard SL.

Journal:

Antimicrob Agents Chemother (2009): 4311

Physical properties

Molecular weight	1076.39
Solvent	DMSO

Spectral properties

Correction factor (280 nm)	0.049
Extinction coefficient (cm ^-1 M ^-1)	275000
Excitation (nm)	756
Emission (nm)	780
Quantum yield	0.3 ¹

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	12171501

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Page updated on October 12, 2025