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70028-38-5

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70028-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70028-38-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,0,2 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 70028-38:
(7*7)+(6*0)+(5*0)+(4*2)+(3*8)+(2*3)+(1*8)=95
95 % 10 = 5
So 70028-38-5 is a valid CAS Registry Number.

70028-38-5Relevant articles and documents

Heterocycles. Part V . Reaction of α,β-Unsaturated Carbonyl Compounds with Arylacetamides. A Synthesis of 2-Pyridone Derivatives

El-Rayyes, N. R.,Al-Hajjar, F. H.

, p. 1473 - 1477 (2007/10/02)

The reaction of 1,3-diaryl-2-propene-1-ones I with arylacetamides II, in the presence of sodium ethoxide under reflux, for two hours, gave the corresponding 3,4,6-triaryl-3,4-dihydro-2(1H)-pyridones IV.However, when the reaction of these ketones was carri

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