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461641-19-0

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461641-19-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 461641-19-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,6,1,6,4 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 461641-19:
(8*4)+(7*6)+(6*1)+(5*6)+(4*4)+(3*1)+(2*1)+(1*9)=140
140 % 10 = 0
So 461641-19-0 is a valid CAS Registry Number.

461641-19-0Downstream Products

461641-19-0Relevant articles and documents

Development of highly stereoselective asymmetric 6π- azaelectrocyclization of conformationally flexible linear 1-azatrienes. From determination of multifunctional chiral amines, 7-alkyl cis-1-amino-2-indanols, to application as a new synthetic strategy: Formal synthesis of 20-epiuleine

Tanaka, Katsunori,Kobayashi, Toyoharu,Mori, Hajime,Katsumura, Shigeo

, p. 5906 - 5925 (2007/10/03)

The highly stereoselective asymmetric 6π-azaelectrocyclization was achieved as a general synthetic method based on the reaction between the (E)-3-carbonyl-2,4,6-trienal compounds and the (-)-7-alkyl-cis-l-amino-2-indanol derivatives which are effective chiral amines. The 7-alkyl-substituted 2-indanol moiety of the cyclized products was efficiently removed by the novel manganese dioxide oxidation under remarkably mild conditions, and the method was successfully applied to the formal synthesis of optically active 20-epiuleine.

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