Atto Rho101 NHS ester


λex 586 nm; λem 610 nm

Quality Level

storage temp.



Atto Rho101 NHS ester is a derivative of the well-known dye Rhodamine 101 for coupling to bio-molecules such as DNA, RNA or proteins. Characteristic features of the label are strong absorption, extraordinarily high fluorescence quantum yield, and high thermal and photo-stability. The dye is moderately hydrophilic. ATTO Rho101 is a cationic dye. After coupling to a substrate the dye carries a net electrical charge of +1.


NONH for all modes of transport

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Kakishi Uno et al.
Journal of the American Chemical Society, 133(34), 13558-13564 (2011-08-09)
Photoswitchable or photoactivatable fluorescent dyes are potentially applicable to ultrahigh density optical memory media as well as super-resolution fluorescence imaging when the dyes are highly fluorescent and have large absorption coefficients. Here, we report on highly fluorescent photochromic dyes, which...
Knut Rurack et al.
Analytical chemistry, 83(4), 1232-1242 (2011-01-22)
The determination of the fluorescence quantum yields (QY, Φ(f)) of a series of fluorescent dyes that span the absorption/excitation and emission ranges of 520-900 and 600-1000 nm is reported. The dyes encompass commercially available rhodamine 101 (Rh-101, Φ(f) = 0.913)...
Li-lin Jiang et al.
Guang pu xue yu guang pu fen xi = Guang pu, 31(5), 1348-1351 (2011-08-02)
The absorption, fluorescence and time-resolved fluorescence spectra of Rhodamine 101 dye in both methanol and acidic methanol solutions were measured. The authors achieved the characteristic information of the absorption and fluorescence spectra, and obtained the S1 lifetimes. The authors assigned...
Christian Würth et al.
Analytical chemistry, 84(3), 1345-1352 (2012-01-17)
There is an increasing interest in chromophores absorbing and emitting in the near-infrared (NIR) spectral region, e.g., for applications as fluorescent reporters for optical imaging techniques and hence, in reliable methods for the characterization of their signal-relevant properties like the...

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.