Fluorescent and Luminescent Tools for Life Science

5(6)-Carboxynaphthofluorescein, N-succinimidyl ester (CAS 150347-58-3)

Application: Reactive long wavelength fluorophore for use in labeling proteins and other compounds. Reactive with terminal and internal (Lys) groups, at pH 8-9. The fluorescence properties are pH dependent.

CAS Number: 150347-58-3

Molecular Weight: 573.51

Molecular Formula: C33H19NO9


See also Product M1248 for more information and uses.

Technical Information

Storage: F, D, L

Soluble: DMSO, DMF

Absorption: (in nm) 602

Emission: (in nm) 672


  • Noble JE, Ganju P, Cass AE.(2003) "Fluorescent Peptide probes for high-throughput measurement of protein phosphatases." Anal Chem 75: 2042-7.
  • Noguchi T, Mabuchi I, (2002) "Localized calcium signals along the cleavage furrow of the Xenopus egg are not involved in cytokinesis." Mol Biol Cell 13: 1263-73.
  • Matthews DC, Grondahl L, Battersby BJ, Trau M, (2001) "Multi-fluorescent silica colloids for encoding large combinatorial libraries." Aust J Chem 54: 649.
  • Smeltzer CC, Cannon MJ, Pinson PR, Munger JD Jr, West FG, Grissom CB. (2001) "Synthesis and characterization of fluorescent cobalamin (CobalaFluor) derivatives for imaging." Org Lett 3: 799-801.