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B0274

Sigma-Aldrich

5-Bromo-4-chloro-3-indolyl phosphate p-toluidine salt

tablet

Synonym(s):

BCIP® p-toluidine salt, X-phosphate p-toluidine salt

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About This Item

Empirical Formula (Hill Notation):
C8H6BrClNO4P · C7H9N
CAS Number:
6578-06-9
Molecular Weight:
433.62
EC Number:
229-506-1
MDL number:
MFCD00040636
UNSPSC Code:
12352204
PubChem Substance ID:
57653906
NACRES:
NA.83

form

tablet

storage temp.

−20°C

SMILES string

Cc1ccc(N)cc1.OP(O)(=O)Oc2c[nH]c3ccc(Br)c(Cl)c23

InChI

1S/C8H6BrClNO4P.C7H9N/c9-4-1-2-5-7(8(4)10)6(3-11-5)15-16(12,13)14;1-6-2-4-7(8)5-3-6/h1-3,11H,(H2,12,13,14);2-5H,8H2,1H3

InChI key

QEIFSLUFHRCVQL-UHFFFAOYSA-N

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Specificity

Substrate of choice for use with alkaline phosphatase in immunoblotting and, less commonly, in immunohistological staining procedures. High assay sensitivity is achieved via amplification when BCIP is used in conjunction with Nitro Blue Tetrazolium (NBT) Tablets (Catalog No. N5514). This substrate produces an insoluble end product that is blue-purple in color and can be observed visually.

Application

For the colorimetric detection of alkaline phosphatase-labeled molecules, 5-Bromo-4-chloro-3-indolyl phosphate (BCIP) and Nitro Blue Tetrazolium (NBT) are available. The BCIP/NBT substrate system is versatile and functions in a variety of applications, including Northern Southern, and Western blotting, in situ hybridization, and immunohistochemistry.
BCIP is provided in two salt forms: the disodium salt which is soluble in water and the p-toluidine form which is soluble in dimethylformamide. These salt forms may be used to prepare a stock solution that in combination with NBT and a reaction buffer, form a substrate solution for alkaline phosphatase. This substrate system, when incubated with alkaline phosphatase, produces an insoluble NBT diformazan product that is easily observable with its purple color. For added convenience, a mixture of BCIP and NBT is provided in an easily dissolvable tablet form or as a ready-to-use liquid.

Quantity

Contains 25 mg substrate per tablet.

Substrates

Histochemical substrate for alkaline phosphatase.

Legal Information

BCIP is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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BCIP®/NBT Liquid Substrate System ready to use solution

Sigma-Aldrich

B1911

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Colorimetric Phosphatase/Peroxidase Substrate Systems

NBT-BCIP substrate system aids in western blotting and immunohistological staining, producing a blue-purple insoluble end product.

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