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406215-59-6

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406215-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 406215-59-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,6,2,1 and 5 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 406215-59:
(8*4)+(7*0)+(6*6)+(5*2)+(4*1)+(3*5)+(2*5)+(1*9)=116
116 % 10 = 6
So 406215-59-6 is a valid CAS Registry Number.

406215-59-6Downstream Products

406215-59-6Relevant articles and documents

Asymmetric synthesis of the protoberberine alkaloid (s)-(-)-xylopinine using enantiopure sulfinimines

Davis, Franklin A.,Mohanty, Pradyumna K.

, p. 1290 - 1296 (2007/10/03)

A concise enantioselective synthesis of (S)-(-)-xylopinine (1) is described involving the addition of the laterally lithiated derivative of o-tolunitrile of 16 to enantiopure sulfinimine (+)-14. Treatment of the resulting cyano sulfinamide adduct (-)-17b with DIBAL-H accomplishes five operations in a single pot and furnishes the cyclic imine (+)-18 in good yield. Reduction and cyclization affords (S)-(-)-1. Alternatively basic hydrolysis of 17b,c gives isoquinolone 21 that is cyclized and reduced to give (S)-(-)-1.

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