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Cat. No. M9261
Fluorescein Structure


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1g USD 80 In stock
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Quality Control
  • Current batch:
  • Purity >95%
  • COA
  • MSDS
Biological Activity

Fluorescein dye is a common fluorescent probe. It is very high molar absorptivity at the wavelength of the argon laser (488 nm), large fluorescence quantum yield and high photostability makes it a very useful and sensitive fluorescent label.

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Chemical Information
Molecular Weight 332.31
Formula C20H12O5
CAS Number 2321-07-5
Purity >95%
Solubility DMSO: ≥ 60 mg/mL
Storage 4°C, protect from light

Absorption and fluorescence properties of fluorescein.
RobertSjoback, et al. Spectrochim Acta A Mol Biomol Spectrosc. 1995 Jun;Vol.51, Issue 6, Pages L7-L21.

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Abmole Inhibitor Catalog 2017

Keywords: Fluorescein, Resorcinolphthalein supplier, inhibitors

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