Supplier: Biotium

DAB (3,3′-diaminobenzidine) reacts with HRP in the presence of peroxide to yield an insoluble brown-colored product at locations where peroxidase-conjugated antibodies are bound to samples. The brown precipitate is insoluble in alcohol and other organic solvents, making it an excellent substrate for immunohistochemical staining that requires the use of traditional counterstains and mounting media.

Supplier: Thermo Fisher Scientific

DAB EASY 10 mg, tablets for immunohistochemistry

Supplier: Merck Millipore (Oncogene)

3,3'-Diaminobenzidine tetrahydrochloride (DAB HCl)

Supplier: MP Biomedicals

Easily soluble in water. The aqueous solution is unstable and can be used only for a few days even if it is kept in a refrigerator. 1% aqueous solution is dark and turns reddish when exposed to light.

Supplier: Molekula

3,3'-Diaminobenzidine tetrahydrochloride (DAB HCl)