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Merck
CN

202088

Chromotrope 2R

Dye content 75 %

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
PubChem Substance ID:
329751990
UNSPSC Code:
12171500
EC Number:
224-085-0
MDL number:
MFCD00003955
Colour Index Number:
16570

Key Documents

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composition

Dye content, 75%

λmax

510 nm, 530 nm (2nd)

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

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
10996BJ
07102EE
03330JT
01903BV
00803CW

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Alaa S Amin et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 67(3-4), 1088-1093 (2006-11-10)
A simple, accurate and highly sensitive spectrophotometric method is proposed for the rapid determination of pipazethate hydrochloride, dextromethorphan hydrobromide and drotaverine hydrochloride using chromotrope 2B (C2B) and chromotrope 2R (C2R). The method consists of extracting the formed ion-associates into chloroform
Correspondence: Chromotrope 2R.
Bernard M Wagner
Toxicologic pathology, 31(6), 717-717 (2003-10-31)
L Cameron et al.
Journal of immunology (Baltimore, Md. : 1950), 164(3), 1538-1545 (2000-01-21)
Eosinophil differentiation occurs within the bone marrow in response to eosinopoietic cytokines, particularly IL-5. Recently, however, eosinophil precursors (CD34/IL-5Ralpha+ cells) and IL-5 mRNA+ cells have been identified within the lungs of asthmatics, indicating that a population of eosinophils may differentiate
Ni Hui et al.
Amino acids, 38(3), 711-719 (2009-04-07)
The electrochemical behaviors of the interaction of chromotrope 2R (CH2R) with human serum albumin (HSA) are investigated on the hanging mercury drop electrode with linear sweep voltammetry. In the acidic buffer solution (pH 2.5) CH2R has a well-defined voltammetric reductive
Eveline P C T de Rijk et al.
Toxicologic pathology, 31(4), 462-464 (2003-07-10)
Hyaline droplet formation in the proximal tubular cells of the kidney commonly occurs under different pathological conditions in experimental animals. In rats, intracytoplasmic hyaline droplet formation is predominantly associated with accumulation of the male rat-specific alpha(2u)-globulin, whereas under other (pathological)
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