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Merck

D4418

3,3′-Diaminobenzidine

SIGMAFAST™, chromogenic, tablet

Synonym(s):

DAB, DAB tablets, Immunohistology substrate

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About This Item

CAS Number:
91-95-2
UNSPSC Code:
12352204
PubChem Substance ID:
24893872
NACRES:
NA.83
MDL number:
MFCD00007725

Key Documents

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Product Name

SIGMAFAST™ 3,3′-Diaminobenzidine tablets, tablet, To prepare 15 mL

Quality Level

200

SMILES string

Nc1ccc(cc1N)-c2ccc(N)c(N)c2

InChI key

HSTOKWSFWGCZMH-UHFFFAOYSA-N

InChI

1S/C12H14N4/c13-9-3-1-7(5-11(9)15)8-2-4-10(14)12(16)6-8/h1-6H,13-16H2

form

tablet

solubility

water: 1 tablet/5 mL

storage temp.

−20°C

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Application

Developed for use in immunohistology and immunoblotting as a precipitating substrate for the localization of peroxidase activity. DAB is the immunohistology substrate of choice as it produces an intense brown-black stain which is resistant to alcohol. Slides stained with DAB may be dehydrated, mounted in resinous media, and stored for future reference. SIGMAFAST™ DAB Tablets require no additional buffers or steps to prepare an active substrate solution. Tablets are individually packaged in foil packets

Preparation Note

Each tablet set dissolved in 15 mL deionized water yields a ready-to-use buffered solution containing DAB and urea hydrogen peroxide.

Legal Information

SIGMAFAST is a trademark of Sigma-Aldrich Co. LLC

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Danger

Hazard Classifications

Acute Tox. 4 Oral - Carc. 1B - Eye Dam. 1 - Muta. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

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

flash_point_f

Not applicable

flash_point_c

Not applicable

wgk

WGK 2

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

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Certificates of Analysis (COA)

Lot/Batch Number
0000484644
0000484644
0000473040
0000473036
0000473036

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Huiming Yang et al.
Nature communications, 11(1), 2582-2582 (2020-05-24)
Polyglutamine expansion in proteins can cause selective neurodegeneration, although the mechanisms are not fully understood. In Huntington's disease (HD), proteolytic processing generates toxic N-terminal huntingtin (HTT) fragments that preferentially kill striatal neurons. Here, using CRISPR/Cas9 to truncate full-length mutant HTT
Erin N Scully et al.
Behavioural brain research, 331, 151-158 (2017-05-17)
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Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 37(3), 980-993 (2016-05-14)
The NMDA antagonist memantine preferentially inhibits extrasynaptic NMDA receptors, which are overactivated upon stroke and thought to disturb neuroplasticity. We hypothesized that memantine enhances post-ischemic neurological recovery, brain remodeling, and plasticity. C57BL6/j mice were exposed to intraluminal middle cerebral artery
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Pathogens (Basel, Switzerland), 10(2) (2021-02-10)
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免疫組織染色のプロトコル

パラフィン包埋組織切片中の特定の抗原を染色および可視化する免疫組織染色（IHC）の全プロトコルをご紹介します。

ウェスタンブロッティングのための細胞溶解・タンパク質抽出

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Immunohistochemistry Procedure

Use this protocol to for the entire immunohistochemistry (IHC) procedure through staining and visualization of specific antigens in paraffin-embedded tissue sections.

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Protocol for sample preparation for cell lysis and efficient protein extraction from cultured tissues and cells for subsequent Western blotting.

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