5(6)-Carboxytetramethylrhodamine N-succinimidyl ester

BioReagent, suitable for fluorescence, ≥70% (coupling to amines)

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
MDL number:
PubChem Substance ID:

Quality Level

product line



≥70% (coupling to amines)


DMF: soluble
acetonitrile: soluble
methanol: soluble


λex 543 nm; λem 576 nm in methanol
λex 554 nm; λem 584 nm in 0.1 M phosphate pH 8.0


suitable for fluorescence

storage temp.


SMILES string




InChI key


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5(6)-Carboxytetramethylrhodamine N-succinimidyl ester (TMR-SE) is used as an amine coupling reagent to form 5(6)-carboxytetramethylrhodamine (TMR) derivatized compounds such as proteins and drugs.


Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Rhodamine derived label for amine modification and protein conjugation

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

L D Mayfield et al.
Bioorganic & medicinal chemistry letters, 9(10), 1419-1422 (1999-06-09)
Resins for solid-phase synthesis can affect coupling efficiencies by interacting with reactants. We have observed that polyethylene glycol-polystyrene (PEG-PS) solid support absorbs added activated fluorophores, preventing efficient labeling of peptide nucleic acids (PNAs). We now report that addition of an...
E. Koller
Appl. Fluoresc. Technol., 3, 20-20 (1991)
Divyamani Srinivasan et al.
PloS one, 6(3), e17732-e17732 (2011-03-23)
Cell-penetrating peptides (CPPs) can transport macromolecular cargos into live cells. However, the cellular delivery efficiency of these reagents is often suboptimal because CPP-cargo conjugates typically remain trapped inside endosomes. Interestingly, irradiation of fluorescently labeled CPPs with light increases the release...
Angela María Barbero et al.
Journal of leukocyte biology, 109(1), 257-273 (2020-09-30)
Tuberculosis dates back to ancient times but it is not a problem of the past. Each year, millions of people die from tuberculosis. After inhalation of infectious droplet nuclei, Mycobacterium tuberculosis reaches the lungs where it can manipulate the immune...
P Kask et al.
Biophysical journal, 78(4), 1703-1713 (2000-03-29)
A method of sample analysis is presented which is based on fitting a joint distribution of photon count numbers. In experiments, fluorescence from a microscopic volume containing a fluctuating number of molecules is monitored by two detectors, using a confocal...

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