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157982-63-3

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157982-63-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157982-63-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,9,8 and 2 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157982-63:
(8*1)+(7*5)+(6*7)+(5*9)+(4*8)+(3*2)+(2*6)+(1*3)=183
183 % 10 = 3
So 157982-63-3 is a valid CAS Registry Number.

157982-63-3Relevant articles and documents

Decarbonylation of α-tertiary amino acids application to the synthesis of polyhydroxylated indolizidines from D,L-pipecolic acid

Martin-Lopez, Maria J.,Rodriguez, Rosa,Bermejo, Francisco

, p. 11623 - 11636 (1998)

The decarbonylation of the bicyclic α-tertiary carboxamido acid 11 led to the enamide 12, easily transformed into the indolizidine alkaloid 8,8a- trans-8-hydroxy-indolizidine 14. Likewise, the same process applied to the α-substituted pipecolic acid derivative 5 led to the unsaturated ester 6 which was easily transformed either into δ-coniceine 9 or to 14. The thermal fragmentation of the acyl derivative 22 led to the enamide 24 which has been transformed into (±)-swainsonine 26.

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