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632290-89-2

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632290-89-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 632290-89-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,2,2,9 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 632290-89:
(8*6)+(7*3)+(6*2)+(5*2)+(4*9)+(3*0)+(2*8)+(1*9)=152
152 % 10 = 2
So 632290-89-2 is a valid CAS Registry Number.

632290-89-2Relevant articles and documents

A concise asymmetric synthesis of (-)-virolin, (-)-surinamensin,(-)- raphidecursinol B and (-)-polysphorin

Nagaraju, Manda,Chandra, Rajesh,Gawali, Bhimrao B.

, p. 1485 - 1488 (2012)

Highly concise and general asymmetric syntheses of biologically important natural (-)-8,4-oxyneolignans [(-)-virolin, (-)-surinamensin, (-)-raphidecursinol B, and (-)-polysphorin] are reported. The key step in the synthesis is the Evan's syn-aldol reaction to achieve the adducts with the desired stereochemistry. The four biologically important plant metabolites were synthesized using two common intermediates. Georg Thieme Verlag Stuttgart · New York.

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