92-73-9 Usage
Description
N-(2,5-Dimethoxyphenyl)-3-hydroxy-2-naphthamide is a shallow rice gray powder with a melting point of 181°C. It is soluble in pyridine but insoluble in water. In a sulfuric acid and sodium hydroxide solution, it forms a yellow solution, and it slightly dissolves in a sodium carbonate solution. N-(2,5-Dimethoxyphenyl)-3-hydroxy-2-naphthamide is stable in air and exhibits medium affinity for cotton.
Uses
Used in Textile Industry:
N-(2,5-Dimethoxyphenyl)-3-hydroxy-2-naphthamide is used as a dyeing agent for cotton, viscose, and silk. It is not typically used for printing due to its medium affinity for cotton. This product is suitable for dyeing various textiles, providing color and enhancing the appearance of fabrics.
Preparation
2,5-Dimethoxyaniline and 3-Hydroxy-2-naphthoic acid condensation.
Check Digit Verification of cas no
The CAS Registry Mumber 92-73-9 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 92-73:
(4*9)+(3*2)+(2*7)+(1*3)=59
59 % 10 = 9
So 92-73-9 is a valid CAS Registry Number.
92-73-9Relevant articles and documents
Photosynthesis-inhibiting activity of N-(Disubstituted-phenyl)-3-hydroxynaphthalene-2-carboxamides
Gonec, Tomas,Jampilek, Josef,Jendrzejewska, Izabela,Kos, Jiri,Oravec, Michal
, (2021/07/31)
A set of twenty-four 3-hydroxynaphthalene-2-carboxanilides, disubstituted on the anilide ring by combinations of methoxy/methyl/fluoro/chloro/bromo and ditrifluoromethyl groups at different positions, was prepared. The compounds were tested for their ability to inhibit photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. N-(3,5-Difluorophenyl)-, N-(3,5-dimethylphenyl)-, N-(2,5-difluorophenyl)-and N-(2,5-dimethylphenyl)-3-hydroxynaphthalene-2-carboxamides showed the highest PET-inhibiting activity (IC50 ~ 10 μM) within the series. These compounds were able to inhibit PET in photosystem II. It has been found that PET-inhibiting activity strongly depends on the position of the individual substituents on the anilide ring and on the lipophilicity of the compounds. The electron-withdrawing properties of the substituents contribute towards the PET activity of these compounds.