Thermo Scientific™ Pierce™ OPD Substrates

Water-soluble horseradish peroxidase (HRP) substrate that produces a yellow-orange product detectable at 492nm by ELISA plate readers.

Brand: Thermo Scientific™

Manufacturer Part Number: 34005

UNSPSC: 41105300

Code: PN

Additional Details:
Additional Details: CAS Number: 50654-94-9 Weight: 1.81440kg Transport: UN number : 1673 Chem class : 1b Pack group : III

Product Code. 11869250

Quantity Price
1 £ 62.75 / 25g
Estimated Shipment date
from Supplier 19-05-2017
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Description and Specification


Formulation o-phenylenediamine dihydrochloride; powder
Sufficient For Preparing 50L of 1X (5mg/10mL) substrate buffer
Description Pierce OPD Powder
Quantity 25g

OPD (o-phenylenediamine dihydrochloride) yields a water-soluble yellow-orange product when reacted with peroxidase with an absorbance maximum of 492nm. OPD can easily be dissolved in a substrate buffer such as Thermo Scientific Stable Peroxide Substrate Buffer (Part No. 34062).


  • Water soluble product when reacted with peroxidase
  • Absorbance maximum of 492nm