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Benzoic Acid, ≥99,5%, powder


Green fluorophore standard used for labeling and in enzyme assay systems.

  • Greater photostability than fluorescein

The lower pKa version of fluorescein (similar to Oregon Green®) is widely used in biological assays and for labeling cells and tissues. This dichloro-version of the popular dye fluorescein is known to have higher fluorescence emission at lower pH values as well as greater photostability, similar to AlexaFluor® dyes.

Formula: C₂₀H₁₀Cl₂O₅
MW: 401,20
MDL Number: MFCD00005047
CAS Number: 76-54-0
Specification Test Results
Form White Powder
Storage Store at Room Temperature (15-30 °C).
Heavy Metals ≤5 ppm
Residue on Ignition ≤0,005%
Freezing Point 122...123 °C



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Size Supplier No. VWR Catalog Number Unit Price Quantity
100 mg M1278 101447-540 Each (100mg) 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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