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230309-04-3

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230309-04-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 230309-04-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,0,3,0 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 230309-04:
(8*2)+(7*3)+(6*0)+(5*3)+(4*0)+(3*9)+(2*0)+(1*4)=83
83 % 10 = 3
So 230309-04-3 is a valid CAS Registry Number.

230309-04-3Relevant articles and documents

Regio- and stereoselective synthesis of 1,4-dihydropyridines by way of an intramolecular interaction of a thiocarbonyl or carbonyl with a pyridinium nucleus

Yamada, Shinji,Misono, Tomoko,Ichikawa, Mayumi,Morita, Chisako

, p. 8939 - 8949 (2001)

Chiral 1,4-dihydropyridines were prepared by the regio- and stereoselective addition of ketene silyl acetals and organometallic reagents to pyridinium salts. In the addition reaction, an intramolecular interaction between the thiocarbonyl or carbonyl with

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