85-85-8 Usage
Description
1-(2-Pyridylazo)-2-naphthol is an organic compound that serves as a versatile chemical reagent and indicator, characterized by its ability to form complexes with transition metals and its application in various analytical techniques.
Uses
Used in Analytical Chemistry:
1-(2-Pyridylazo)-2-naphthol is used as an indicator for the complexometric titration of transition metals, such as copper, iron, and zinc. It forms colored complexes with these metals, allowing for their detection and quantification through visual observation or spectrophotometry.
Used in Environmental Science:
1-(2-Pyridylazo)-2-naphthol is used as a reagent for the extraction and spectrophotometric determination of trace amounts of transition metals in environmental samples, such as water, soil, and air. This helps in assessing the presence and concentration of potentially harmful metal contaminants.
Used in Pharmaceutical Industry:
1-(2-Pyridylazo)-2-naphthol is used as a reagent in the development and analysis of metal-based pharmaceutical compounds, aiding in the detection and quantification of metal ions in drug formulations.
Used in Research and Development:
1-(2-Pyridylazo)-2-naphthol is employed as a research tool in the synthesis and study of metal complexes, providing insights into their properties, stability, and potential applications in various fields, including catalysis, materials science, and medicine.
Purification Methods
Purify PAN by repeated crystallisation from EtOH or MeOH. It can also be purified by sublimation under vacuum. Purity can be checked by TLC using a mixed solvent (pet ether/Et2O/EtOH; 10:10:1) on a silica gel plate. It has pK1 1.9 and pK2 12.2 in 20% aqueous ethoxyethanol. It chelates with copper [Pease & Williams Anal Chem 31 1046 1959]. [Beilstein 22 I 694, 22 III/IV 7073, 22/4 V 618.]
Check Digit Verification of cas no
The CAS Registry Mumber 85-85-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 5 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 85-85:
(4*8)+(3*5)+(2*8)+(1*5)=68
68 % 10 = 8
So 85-85-8 is a valid CAS Registry Number.
InChI:InChI=1/C15H11N3O/c19-13-9-8-11-5-1-2-6-12(11)15(13)18-17-14-7-3-4-10-16-14/h1-10,19H
85-85-8Relevant articles and documents
Azo compounds reducing formation and toxicity of amyloid beta aggregation intermediates
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, (2011/10/12)
The present invention relates to compounds suitable as modulators of protein misfolding and/or protein aggregation. The compounds are particularly suitable as inhibitors of amyloid aggregate formation and/or modulators of amyloid surface properties, and/or as activators of degradation or reduction of amyloid aggregates.
IMPROVED SYNTHESES OF 4-(2-PYRIDYLAZO)-1,3-BENZENEDIOL (PAR) AND 1-(2-PYRIDYLAZO)-2-NAPHTHOL (PAN)
Wiejak, Stanislaw,Pasternak, Ewaryst E.,Tomasik, Piotr
, p. 895 - 897 (2007/10/02)
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Evaporator system comprising a stabilized pesticidal phosphoric acid ester and method for stabilizing such ester enclosed in an evaporator
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, (2008/06/13)
An evaporator system adapted for emitting insect killing vapors of an insecticide therefrom and comprising a liquid or solid composition enclosed therein, said insecticide consisting in at least one volatile phosphoric acid ester which is stabilized by at least one diazene compound.
