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201274-51-3

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201274-51-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 201274-51-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,1,2,7 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 201274-51:
(8*2)+(7*0)+(6*1)+(5*2)+(4*7)+(3*4)+(2*5)+(1*1)=83
83 % 10 = 3
So 201274-51-3 is a valid CAS Registry Number.

201274-51-3Relevant articles and documents

Fusicoccin ring system by [4 + 4] cycloaddition. 2. A model study

Sieburth, Scott McN.,McGee Jr., Kevin F.,Al-Tel, Taleb H.

, p. 4007 - 4010 (1999)

A synthetic approach to fusicoccin A utilizing intramolecular photocycloaddition of tethered 2-pyridones has been completed. This study has led to the first solvent-dependent 2-pyridone photocycloaddition yielding either cis or trans products. Epoxidation of the cis photoproduct is selective for the disubstituted alkene, stabilizes the product, and is properly located for installation of the trans-1,2-diol. Activation of the secondary amide by reaction with an isocyanate led to the reduction of the neopentyl amide carbonyl to a methyl group.

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