5639-34-9 Usage
Synonyms
ANSA
Chemical classification
Aromatic amine
Structural features
Contains a naphthol ring and a sulfonic acid group
Applications
a. Production of azo dyes for the textile industry
b. Reagent in organic synthesis for the preparation of various compounds
Solubility
Soluble in water
Bonding
Forms strong hydrogen bonds due to its structure
Safety
Considered a safe chemical with low toxicity
Industrial and laboratory use
Suitable for various settings due to its low toxicity and chemical properties
Check Digit Verification of cas no
The CAS Registry Mumber 5639-34-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,3 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 5639-34:
(6*5)+(5*6)+(4*3)+(3*9)+(2*3)+(1*4)=109
109 % 10 = 9
So 5639-34-9 is a valid CAS Registry Number.
InChI:InChI=1/C10H9NO4S/c11-10-8-3-2-7(16(13,14)15)5-6(8)1-4-9(10)12/h1-5,12H,11H2,(H,13,14,15)
5639-34-9Relevant academic research and scientific papers
Process for the preparation of aromatic aminohydroxy compounds
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, (2008/06/13)
An improvement in the process for the preparation of an aromatic hydroxy compounds by reacting an aromatic nitroso compound of the formula STR1 wherein R1, R2 and R3 independently represent hydrogen, a lower alkyl radical, halogen, a carboxyl or sulfo group or the corresponding alkali metal salt thereof or R1, R2 or R3 individually represent an optionally substituted aromatic ring formed by linking two adjacent radicals, with hydrazine, the improvement residing in reacting the aromatic nitroso compound with the hydrazine in approximately equivalent amounts in an aqueous medium at temperatures from 10° to 50° C., in the absence of a catalyst the aromatic nitroso compound being initially introduced into a reaction chamber and the hydrazine being added thereto.
