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o-Phenylenediamine dihydrochloride

Cat No.
CSUB-0424
Applications
o-Phenylenediamine is a peroxidase substrate suitable for use in ELISA procedures. The substrate produces a soluble end product that is orange-brown in color and can be read spectrophotometrically at 450 nm. The OPD reaction may be stopped with 3 N HCl or 3 M H2SO4 and read at 492 nm.
Form
tablet
Enzyme Commission Number
210-418-7
CAS No.
615-28-1
Molecular Weight
181.06
Storage
2-8°C
MDL Number
MFCD00012966
PubChem Substance ID
24898837
mp
258 °C (dec.)(lit.)
Reconstitution
Dissolve one tablet in 0.05 M phosphate-citrate buffer, pH 5.0, to the desired concentration (typically an OPD concentration of 0.4 mg/ml is used). Add 40 μl of fresh 30% hydrogen peroxide per 100 ml of substrate buffer solution, immediately prior to use. Tablets are individually packaged in foil packets.
Beilstein Registry Number
3912045
Substrates
Peroxidase Substrates
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