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MilliporeSigma

323209

4-(2-Pyridylazo)resorcinol

96%

Synonym(s):

PAR

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About This Item

Empirical Formula (Hill Notation):
C11H9N3O2
CAS Number:
1141-59-9
Molecular Weight:
215.21
Beilstein/REAXYS Number:
184665
EC Number:
214-528-6
MDL number:
MFCD00006256
UNSPSC Code:
12171500
PubChem Substance ID:
24859228
NACRES:
NA.47

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Quality Level

200

assay

96%

form

powder

composition

Carbon: 58.6-64.2%

Nitrogen: 18.6-20.4%

technique(s)

titration: suitable

color

brown-red

mp

192-202 °C (lit.)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc(\N=N\c2ccccn2)c(O)c1

InChI

1S/C11H9N3O2/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11/h1-7,15-16H/b14-13+

InChI key

RJNYNDHYSJRRDW-BUHFOSPRSA-N

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1 of 4

This Item
178268114669131083
4-(2-Pyridylazo)resorcinol 96%

Sigma-Aldrich

323209

4-(2-Pyridylazo)resorcinol

4-(2-Pyridylazo)resorcinol monosodium salt hydrate

Sigma-Aldrich

178268

4-(2-Pyridylazo)resorcinol monosodium salt hydrate

4-(4-Nitrophenylazo)resorcinol Dye content 90 %

Sigma-Aldrich

114669

4-(4-Nitrophenylazo)resorcinol

4-Phenylazophenol 98%

Sigma-Aldrich

131083

4-Phenylazophenol

technique(s)

titration: suitable

technique(s)

-

technique(s)

-

technique(s)

titration: suitable

color

brown-red

color

-

color

-

color

-

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

form

powder

form

powder or crystals

form

powder

form

powder

assay

96%

assay

≥97.5% (HPLC)

assay

-

assay

98%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

General description

4-(2-Pyridylazo)resorcinol (PAR) is a monosodium salt(1), dibasic acid that forms the protonated complexes with most metal ions.

Application

4-(2-Pyridylazo)resorcinol (PAR) serves as a metallochromic indicator and is suitable as a chromogenic agent for the quantitative determination of over 50 elements.

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN6339
BCCL7900
BCCK1111
BCCH6478
BCCD4113

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Douglas A Mitchell et al.
Biochemistry, 44(12), 4636-4647 (2005-03-23)
The inducible isoform of nitric oxide synthase (iNOS) and three zinc tetrathiolate mutants (C104A, C109A, and C104A/C109A) were expressed in Escherichia coli and purified. The mutants were found by ICP-AES and the zinc-specific PAR colorimetric assay to be zinc free
Wan Mohd Ebtisyam Mustaqim Mohd Daniyal et al.
Polymers, 13(3) (2021-02-06)
In this study, X-ray photoelectron spectroscopy (XPS) was used to study chitosan-graphene oxide (chitosan-GO) incorporated with 4-(2-pyridylazo)resorcinol (PAR) and cadmium sulfide quantum dot (CdS QD) composite thin films for the potential optical sensing of cobalt ions (Co2+). From the XPS
Edson Luiz Silva et al.
Journal of hazardous materials, 171(1-3), 1133-1138 (2009-08-04)
A procedure for simultaneous separation/preconcentration of copper, zinc, cadmium, and nickel in water samples, based on cloud point extraction (CPE) as a prior step to their determination by inductively coupled plasma optic emission spectrometry (ICP-OES), has been developed. The analytes
Xiaoyang Liu et al.
Marine drugs, 17(8) (2019-07-28)
In this study, three synthetic zinc-chelating peptides (ZCPs) derived from sea cucumber hydrolysates with limited or none of the common metal-chelating amino-acid residues were analyzed by flame atomic absorption spectroscopy, circular dichroism spectroscopy, size exclusion chromatography, zeta-potential, Fourier transform infrared
Mozhgan Khorasani-Motlagh et al.
Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine, 32(3), 521-532 (2019-02-14)
The biosynthesis of the dinuclear metal cluster at the active sites of the [NiFe]-hydrogenase enzymes is a multi-step process executed by a suite of accessory proteins. Nickel insertion during maturation of Escherichia coli [NiFe]-hydrogenase 3 is achieved by the metallochaperones
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