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F0500

Sigma-Aldrich

Fast Blue RR Salt

crystalline

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Synonym(s):
4-Benzoylamino-2,5-dimethoxybenzenediazonium chloride hemi(zinc chloride) salt, Azoic Diazo No. 24
Linear Formula:
C15H14ClN3O3 · 1/2 ZnCl2
CAS Number:
14726-29-5
Molecular Weight:
387.89
Colour Index Number:
37155
EC Number:
238-777-5
MDL number:
MFCD00074762
UNSPSC Code:
12171500
PubChem Substance ID:
24894722
NACRES:
NA.47

form

crystalline

Quality Level

200

solubility

water: 1 mg/mL, clear to hazy, yellow-green

ε (extinction coefficient)

≥15000 at 326-332  nm
≥7000 at 390-396 nm

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

−20°C

SMILES string

[Cl-].[Cl-].Cl[Zn]Cl.COc1cc([N+]#N)c(OC)cc1NC(=O)c2ccccc2.COc3cc([N+]#N)c(OC)cc3NC(=O)c4ccccc4

InChI

1S/2C15H13N3O3.4ClH.Zn/c2*1-20-13-9-12(18-16)14(21-2)8-11(13)17-15(19)10-6-4-3-5-7-10;;;;;/h2*3-9H,1-2H3;4*1H;/q;;;;;;+2/p-2

InChI key

LLARVKAOQLUCQI-UHFFFAOYSA-L

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Application

Fast blue RR salt has been used in the immunohistochemistry to detect the activity of alkaline phosphatase. It has been used in the procedure of connective tissue staining using picrosirius red.

Biochem/physiol Actions

Fast blue RR is mainly used in histological stainings. It binds to the reaction product of alkaline phosphatase and precipitates it as an insoluble compound. The sites of alkaline phosphatase activity appears black. Fast blue RR is also used for the detection of esterase activity. It couples with naphthol (released from naphthol acetate) and forms an insoluble azo-dye which appears red/blue.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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