All Photos(1)
About This Item
Empirical Formula (Hill Notation):
C11H9N3O2
CAS Number:
Molecular Weight:
215.21
Beilstein/REAXYS Number:
184665
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47
Recommended Products
Quality Level
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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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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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
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