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76697-41-1

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76697-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76697-41-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,6,9 and 7 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76697-41:
(7*7)+(6*6)+(5*6)+(4*9)+(3*7)+(2*4)+(1*1)=181
181 % 10 = 1
So 76697-41-1 is a valid CAS Registry Number.

76697-41-1Downstream Products

76697-41-1Relevant articles and documents

149. Notizen zur Synthese von 2-Aminophenylsulfonen

Courtin, Alfred,Tobel, Hans-Rudolf von,Auerbach, Guenther

, p. 1412 - 1419 (1980)

Syntheses of the alkyl, cycloalkyl and aryl 2-aminophenyl sulfones 10 were achieved by oxidation of the corresponding 2-nitrophenyl sulfides 7 to the 2-nitrophenyl sulfones 9 followed by ethanolic Bechamp-reduction.The sulfides 7 in turn were obtained by either reactions of 2-nitro-thiophenol (8) with the appropriate alkyl and cycloalkyl halides or of 2-chloro-nitrobenzene (5) with the relevant thiols.Condensation of 2-nitrobenzenesulfinic acid (3) with bromoacetic acid in aqueous alkaline solution led - presumably via 2-nitrophenylsulfonylacetic acid (4) - to methyl2-nitrophenyl sulfone (1), reduction of which gave 2-aminophenyl methyl sulfone (2).Treatment of 2-aminothiophenol (11) with t-butyl alcohol in aqueous sulfuric acid gave 2-aminophenyl t-butyl sulfide (12), which was acetylated to o-t-butylthio-acetanilide (13).Oxidation of the latter to o-t-butylsulfonyl-acetanilide (14) followed by hydrolysis led to 2-aminophenyl t-butyl sulfone (15).

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