Fluoro hROS





A new novel probe, Aminophenyl fluorescein (APF), developed by Tetsuo Nagano et. al. (1), is a general selective indcator for the detection of highly Reactive Oxygen Species (hROS). The probe has little reactivity towards other ROS such as: singlet oxygen (O21), superoxide (O2– •), hydrogen peroxide (H2O2), nitric oxide (NO•), and alkyl peroxide (RO2•) (see table below)1. APF is a cell permeable indicator that can be used to detect Hydroxyl Radical (.OH), Peroxynitrite: (ONOO- ) and hypochlorite (-OCl) production in cells.

Several fluorescent probes such as 2’,7’-dichlorodihydrofluorescein (DCFH) and di-hydrorhodamine123, have been developed to detect Reactive Oxygen Species (ROS). As Hempel and co-workers (2) have indicated, DCFH and di-hydrorhodamine123 can react with various ROS and oxidizing species such as hydrogen peroxide, hypochlorite, superoxide, nitric oxide, ferrous ion, and others. These probes should be considered as detecting a broad range of ROS (2).

Key Benefits

  • Quenched Cell permeable dye.
  • One Step, No wash Homogenous assay.
  • Adaptable to High throughput assay platforms.
  • Can monitor multiple time points to follow real time kinetics.
  • Non-destructive cell based assay allows monitoring of additional parameters.
  • Applications – Fluorescent plate reader / Flow Cytometery / Fluorescent Microscopy.

Additional information

Kit Size



      Benzyl isothiocyanate-mediated generation of reactive oxygen species causes cell cycle arrest and induces apoptosis via activation of MAPK in human pancreatic cancer cellsGeneration of highly-reactive oxygen species is closely related to hair cell damage in rat organ of corti treated with gentamicinPost-translational activation of human phenylalanine 4-monooxygenase from an endobiotic to a xenobiotic enzyme by reactive oxygen and reactive nitrogen speciesCrocetin prevents retinal degeneration induced by oxidative and endoplasmic reticulum stresses via inhibition of caspase activity
    • Ken-ichi Setsukinai, Yasuteru Urano, Katsuko Kakinuma, Hideyuki J. Majima , and Tetsuo Nagano. Development of Novel Fluorescence Probes That Can Reliably Detect Reactive Oxygen Species and Distinguish Specific Species. THE JOURNAL OF BIOLOGICAL CHEMISTRY Vol. 278, No. 5, Issue of January 31, pp. 3170–3175, 2003
    • Hempel, S. L., Buettner, G. R., O’Malley, Y. Q., Wessels, D. A., and Flaherty, D. M. (1999) Free Radical Biol. Med. 27, 146–159
    • Part# 4011: APF Dye (2-8C)

    Manufactured: by Daiichi Pure Chemicals Co. Ltd. Japan

    Not for Sale in Japan

    *Test size will depend on dilution and volume used per test. For example:

    Dilution of HPF Volume of test Numer of tests
    1:500 (10uM final) 0.2 mL 147
    1: 1000 (5uM final) 0.2 mL 294