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195251

Direct Red 81

Dye content 50 %

Synonym(s):

DR 81, Disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate

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About This Item

Empirical Formula (Hill Notation):
C29H19N5Na2O8S2
CAS Number:
2610-11-9
Molecular Weight:
675.60
PubChem Substance ID:
24851682
UNSPSC Code:
12171500
Colour Index Number:
28160
NACRES:
NA.47
EC Number:
220-028-9
MDL number:
MFCD00003949
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form

powder

Quality Level

100

composition

Dye content, 50%

technique(s)

microbe id | staining: suitable

mp

240 °C (dec.) (lit.)

solubility

H2O: 0.1%, dark red

λmax

397 nm, 508 nm (2nd)

ε (extinction coefficient)

≥12000 at 272-278 nm in H2O at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].Oc1c(N=Nc2ccc(cc2)N=Nc3ccc(cc3)S([O-])(=O)=O)c(cc4cc(NC(=O)c5ccccc5)ccc14)S([O-])(=O)=O

InChI

1S/C29H21N5O8S2.2Na/c35-28-25-15-12-23(30-29(36)18-4-2-1-3-5-18)16-19(25)17-26(44(40,41)42)27(28)34-33-21-8-6-20(7-9-21)31-32-22-10-13-24(14-11-22)43(37,38)39;;/h1-17,35H,(H,30,36)(H,37,38,39)(H,40,41,42);;/q;2*+1/p-2

InChI key

UFUQRRYHIHJMPB-UHFFFAOYSA-L

Biochem/physiol Actions

Bacterial consortium NBNJ6 has an ability to decolorize direct red 81 (DR81).

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
SHBT4840
SHBR6740
SHBQ5471
SHBQ1961
SHBN3053

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R Schräpler et al.
Acta histochemica, 89(2), 237-244 (1990-01-01)
It is known that the birefringency of the collagen fibres is selectively enhanced by staining with Sirius Red. According to experiences, the most authors usually take Sirius Red F3BA as dye. We use the disazo dyestuff Solaminrot 4B produced by
Dianne M Walters et al.
Current protocols in pharmacology, Chapter 5, Unit 5-Unit 5 (2008-03-01)
Pulmonary fibrosis is a component of many interstitial lung diseases, including idiopathic pulmonary fibrosis, a chronic, progressive disease for which there is currently no effective therapy. Bleomycin has been widely used in rodents to model pulmonary fibrosis for the study
D P Berry et al.
Plastic and reconstructive surgery, 102(1), 124-131 (1998-07-09)
The closure of ungrafted sacrococcygeal pilonidal sinus excisional wounds was studied in 15 patients. Wound punch biopsies were taken on a regular basis, and histologic sections were made. To document changes, computer-assisted morphometric image analysis was employed. Initial average wound
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Global Trade Item Number

SKUGTIN
195251-100G04061838761484
195251-25G04061838761491