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7267-97-2

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7267-97-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7267-97-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,6 and 7 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7267-97:
(6*7)+(5*2)+(4*6)+(3*7)+(2*9)+(1*7)=122
122 % 10 = 2
So 7267-97-2 is a valid CAS Registry Number.

7267-97-2Relevant articles and documents

Biomimetic total syntheses of (-)-leucoridines A and C through the dimerization of (-)-dihydrovalparicine

Kokkonda, Praveen,Brown, Keaon R.,Seguin, Trevor J.,Wheeler, Steven E.,Vaddypally, Shivaiah,Zdilla, Michael J.,Andrade, Rodrigo B.

supporting information, p. 12632 - 12635 (2015/10/28)

Concise biomimetic syntheses of the Strychnos-Strychnos-type bis-indole alkaloids (-)-leucoridine A (1) and C (2) were accomplished through the biomimetic dimerization of (-)-dihydrovalparicine (3). En route to 3, the known alkaloids (+)-geissoschizoline (8) and (-)-dehydrogeissoschizoline (10) were also prepared. DFT calculations were employed to elucidate the mechanism, which favors a stepwise aza-Michael/spirocyclization sequence over the alternate hetero-Diels-Alder cycloaddition reaction. Concise biomimetic syntheses of the Strychnos-Strychnos-type bis-indole alkaloids (-)-leucoridine A and C were accomplished through the biomimetic dimerization of (-)-dihydrovalparicine. DFT calculations were used to elucidate the mechanism, which favors a stepwise aza-Michael/spirocyclization sequence over the alternate hetero-Diels-Alder cycloaddition reaction.

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