Skip to Content
Merck
CN

Key Documents

View All Documentation

212407

Direct Blue 71

Dye content 50 %

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Empirical Formula (Hill Notation):
C40H23N7O13S4 · 4Na
CAS Number:
4399-55-7
Molecular Weight:
1029.87
PubChem Substance ID:
24852733
UNSPSC Code:
12171500
Colour Index Number:
34140
NACRES:
NA.47
EC Number:
224-531-4
MDL number:
MFCD00003971
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

form

powder

Quality Segment

200

composition

Dye content, 50%

λmax

594 nm

ε (extinction coefficient)

≥30000 at 582-588 nm in water at 0.01 g/L, ≥15000 at 283-292 nm in water at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].[Na+].[Na+].Nc1ccc2c(O)c(N=Nc3ccc(N=Nc4ccc(N=Nc5cc(c6cccc(c6c5)S([O-])(=O)=O)S([O-])(=O)=O)c7ccccc47)c8ccc(cc38)S([O-])(=O)=O)c(cc2c1)S([O-])(=O)=O

InChI

1S/C40H27N7O13S4.4Na/c41-22-8-10-25-21(16-22)17-38(64(58,59)60)39(40(25)48)47-46-35-15-14-34(28-11-9-24(20-30(28)35)61(49,50)51)45-44-33-13-12-32(26-4-1-2-5-27(26)33)43-42-23-18-31-29(37(19-23)63(55,56)57)6-3-7-36(31)62(52,53)54;;;;/h1-20,48H,41H2,(H,49,50,51)(H,52,53,54)(H,55,56,57)(H,58,59,60);;;;/q;4*+1/p-4

InChI key

QTTDXDAWQMDLOF-UHFFFAOYSA-J

General description

Direct blue 71 is an azo dye with three azo bonds. It is useful to stain membrane-immobilized antibodies and proteins for the investigation of antigen-antibody interactions.

Application

Direct blue 71 has been used to stain sliced tissue sections mounted on the PVDF for in situ proteome analysis, and to stain the electroblotted membranes and sections of the brain to visualize the structure. Direct blue staining is also suitable for the assessment of protein binding and qualitative validation of protein concentration.

Other Notes

2024 CiteAb Award Winner for Supplier Succeeding in Parkinson′s Research

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documents section.

If you need assistance, please contact Customer Support

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library