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81835-50-9

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81835-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81835-50-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,3 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81835-50:
(7*8)+(6*1)+(5*8)+(4*3)+(3*5)+(2*5)+(1*0)=139
139 % 10 = 9
So 81835-50-9 is a valid CAS Registry Number.

81835-50-9Downstream Products

81835-50-9Relevant articles and documents

A convenient synthesis of quinolines by reactions of o-isocyano-β- methoxystyrenes with nucleophiles

Kobayashi, Kazuhiro,Yoneda, Keiichi,Miyamoto, Kazuna,Morikawa, Osamu,Konishi, Hisatoshi

, p. 11639 - 11645 (2007/10/03)

2,4-Disubstituted quinolines have been synthesized by reactions of o-isocyano-β-methoxystyrenes, which can be easily prepared from commercially available o-aminophenyl ketones in three steps, with alkyl(or aryl)lithiums in generally good yields. Subsequently, o-isocyano-β- methoxystyrenes have also proved to react efficiently with lithium dialkylamides to afford the corresponding 4-substituted N,N-dialkylquinolin-2-amines in satisfactory yields. Graphical Abstract.

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