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Merck
CN

P1063

o-Phenylenediamine dihydrochloride

tablet, 60 mg substrate per tablet

Synonym(s):

1,2-Phenylenediamine tablet, OPD, OPD Tablet

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About This Item

Linear Formula:
C6H4(NH2)2·2HCl
CAS Number:
615-28-1
Molecular Weight:
181.06
UNSPSC Code:
12352204
NACRES:
NA.83
PubChem Substance ID:
24898149
EC Number:
210-418-7
Beilstein/REAXYS Number:
3912045
MDL number:
MFCD00012966

Key Documents

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Product Name

o-Phenylenediamine dihydrochloride, tablet, 60 mg substrate per tablet

InChI key

RIIWUGSYXOBDMC-UHFFFAOYSA-N

InChI

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

SMILES string

Cl[H].Cl[H].Nc1ccccc1N

form

tablet

mp

258 °C (dec.) (lit.)

storage temp.

2-8°C

Quality Level

200

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Application

o-Phenylenediamine dihydrochloride has been used as a stop solution for evaluating bovine serum albumin (BSA) antibodies via enzyme-linked immunosorbent assay (ELISA). It has also been used to measure specific antibodies in pig serum by ELISA.

Features and Benefits

Supplied as 50 or 100 tablets per box, individually wrapped with foil for easy storage, use, and safety.

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.
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.

Preparation Note

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.

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Warning

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000495169
0000409991
0000409991
0000495169
0000361665

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E Frontera et al.
Veterinary parasitology, 119(1), 59-71 (2004-03-24)
The immunodetection of local Ascaris suum antigens and local and systemic antibodies were analysed in pigs reinfected with eggs or immunized with the 14, 42 and 97 kilodalton (kDa) fractions from A. suum. Twenty-one Iberian pigs were divided in 7
Francisco Pérez-Bravo et al.
Pediatric diabetes, 4(4), 157-161 (2004-01-09)
To compare the levels of bovine serum albumin (BSA) antibodies and their relationship with duration of breast feeding, age of exposure to cow's milk, and human leukocyte antigen (HLA-DQ) genotype in children with and without type 1 diabetes. Serum samples
Florian Krammer et al.
Clinical and vaccine immunology : CVI, 21(8), 1153-1163 (2014-06-20)
Emerging H7N9 influenza virus infections in Asia have once more spurred the development of effective prepandemic H7 vaccines. However, many vaccines based on avian influenza viruses--including H7--are poorly immunogenic, as measured by traditional correlates of protection. Here we reevaluated sera
Sarah L Rowland et al.
The Journal of experimental medicine, 211(10), 1977-1991 (2014-09-03)
Plasmacytoid dendritic cells (pDCs) have long been implicated in the pathogenesis of lupus. However, this conclusion has been largely based on a correlative link between the copious production of IFN-α/β by pDCs and the IFN-α/β "signature" often seen in human
Cassandra Koole et al.
The Journal of pharmacology and experimental therapeutics, 353(1), 52-63 (2015-01-30)
The glucagon-like peptide-1 receptor (GLP-1R) is a class B G protein-coupled receptor that has a critical role in the regulation of glucose homeostasis, principally through the regulation of insulin secretion. The receptor system is highly complex, able to be activated
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