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P1526

Sigma-Aldrich

o-Phenylenediamine dihydrochloride

peroxidase substrate, chromogenic, solid

Synonym(s):

OPD

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About This Item

Linear Formula:
C6H4(NH2)2·2HCl
CAS Number:
615-28-1
Molecular Weight:
181.06
Beilstein:
3912045
EC Number:
210-418-7
MDL number:
MFCD00012966
UNSPSC Code:
12352204
PubChem Substance ID:
24898213
NACRES:
NA.83

product name

o-Phenylenediamine dihydrochloride, peroxidase substrate

form

solid

color

white to off-white

mp

258 °C (dec.) (lit.)

storage temp.

−20°C

SMILES string

Cl[H].Cl[H].Nc1ccccc1N

InChI

1S/C6H8N2.2ClH/c7-5-3-1-2-4-6(5)8;;/h1-4H,7-8H2;2*1H

InChI key

RIIWUGSYXOBDMC-UHFFFAOYSA-N

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General description

o-Phenylenediamine dihydrochloride (OPD) is a chromogenic substrate that can be used in enzyme-linked immunosorbent assay (ELISA) procedures as it utilizes horseradish peroxidase conjugates. The substrate produces a soluble end product that is orange-brown and can be read spectrophotometrically at 450 nm. The OPD reaction may be stopped with 3N HCl or 3M H2SO4 and read at 492 nm.

Application

o-Phenylenediamine dihydrochloride has been used as a peroxidase substrate in enzyme-linked immunosorbent assay (ELISA) procedures.

Caution

May darken in storage.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Eye Irrit. 2 - Muta. 2 - Skin Sens. 1

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Clinical and vaccine immunology : CVI, 13(9), 1044-1051 (2006-09-09)
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Tropical animal health and production, 51(4), 745-752 (2018-11-14)
Goat breeding in the Northeast region of Brazil plays an important socioeconomic role. However, there are significant losses caused by sanitary deficits and infectious diseases, particularly caseous lymphadenitis (CL). Although CL is considered endemic in Northeastern Brazil, a comprehensive and
E O'Connor et al.
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The ability to detect a protein is always limited to the sensitivity of the assays available. Progress in improving the sensitivity of protein detection will allow a more complete understanding of biological systems. Of particular interest to the field of
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Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 69(7), 1130-1135 (2018-12-13)
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