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81819-00-3

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81819-00-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81819-00-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,1 and 9 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81819-00:
(7*8)+(6*1)+(5*8)+(4*1)+(3*9)+(2*0)+(1*0)=133
133 % 10 = 3
So 81819-00-3 is a valid CAS Registry Number.

81819-00-3Relevant articles and documents

The aldol addition reaction between γ-oxygenated carboxylic esters derived from 2,6-dimethylphenol and piperonal

Costa, Paulo R.R.,Fernandes, Maria F.G.,Pinheiro, Sergio

, p. 1325 - 1328 (1994)

The stereoselectivity of the aldol addition reaction between γ- oxygenated DMP-esters 1a-b and piperonal depends on the nature of the γ- oxygenated substituent. A syn-diastereoselectivity was observed from 1a. This reverse selectivity is due to the chelat

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