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Eosin-5-isothiocyanate ≥98%, Powder


This long wavelength red fluorescent labeling derivative can be used to label amino groups on proteins.

  • Fluorescent amino acid label

It can also be used as a reversible inhibitor of the erythrocyte calcium pump as well as an effective phosphorescent probe in protein rotational studies. Eosin derivatives are also used in diaminobenzidine photo-oxidation processes and fluorescence resonance energy transfer (FRET) systems.

Formula: C₂₁H₇Br₄NO₅S
MW: 704.96  g/mol
MDL Number: MFCD00082502
CAS Number: 60520-47-0
Specification Test Results
Synonyms Ammonium Peroxydisulfate; AP; APS; Ammonium peroxodisulfate; PER
Form White Crystalline Powder
Storage Store at Room Temperature (15-30 °C), Store Desiccated



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Size Supplier No. VWR Catalog Number Unit Price Quantity
25 mg M1074 101447-511 Each (25mg) Retrieving Restricted
restricted In order to process your orders without delay, we request that you provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • State issued document with your organization's Federal Tax ID Number
  • State issued document with your organization's Resale Tax ID Number
  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name and address

* Please note if your account is within the State of California two of these pieces of identification will be required.
VWR will not lift restrictions for residential shipping addresses.

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