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C3143

Sigma-Aldrich

Chromotrope 2R

suitable for modified Gomori Trichrome stain

Synonym(s):

2-(Phenylazo)chromotropic acid disodium salt, Acid Red 29

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About This Item

Empirical Formula (Hill Notation):
C16H10N2Na2O8S2
CAS Number:
4197-07-3
Molecular Weight:
468.37
Colour Index Number:
16570
EC Number:
224-085-0
MDL number:
MFCD00003955
UNSPSC Code:
12171500
PubChem Substance ID:
24892586
NACRES:
NA.47

form

powder

Quality Level

200

composition

Dye content, ≥70%

color

red to brown

solubility

H2O: 1 mg/mL, dark red

εmax

≥450 at 510-513 nm in methanol

suitability

suitable for modified Gomori Trichrome stain

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccccc3)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C16H12N2O8S2.2Na/c19-12-8-11(27(21,22)23)6-9-7-13(28(24,25)26)15(16(20)14(9)12)18-17-10-4-2-1-3-5-10;;/h1-8,19-20H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b18-17+;;

InChI key

GXEAXHYQKZAJGB-QIKYXUGXSA-L

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Application

Chromotrope 2R has been used in the Gomori trichrome staining in osteochondral tissues. It has also been used for the staining of eosinophils in lung sections.

Biochem/physiol Actions

Chromotrope 2R is used for the staining of microsporidia in body fluids and stool samples. It is used in modified Gomori′s trichrome staining. Chromotrope 2R has high affinity for phospholipids and is used for the staining of mitochondrial and endoplasmic reticulum membrane in histological samples.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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