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1233498-33-3

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1233498-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233498-33-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,4,9 and 8 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1233498-33:
(9*1)+(8*2)+(7*3)+(6*3)+(5*4)+(4*9)+(3*8)+(2*3)+(1*3)=153
153 % 10 = 3
So 1233498-33-3 is a valid CAS Registry Number.

1233498-33-3Downstream Products

1233498-33-3Relevant 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.

, 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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