Cas 142422-29-5,(E)-5,6-Dihydro-5-methyl-6-(4-methoxyphenyl)-2(1H)-pyridinone

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Check Digit Verification of cas no

The CAS Registry Mumber 142422-29-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,4,2 and 2 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 142422-29:
(8*1)+(7*4)+(6*2)+(5*4)+(4*2)+(3*2)+(2*2)+(1*9)=95
95 % 10 = 5
So 142422-29-5 is a valid CAS Registry Number.

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142422-29-5Relevant academic research and scientific papers

Stereocontrolled Syntheses of Substituted Unsaturated δ-Lactams from 3-Alkenamides

Marson, Charles M.,Grabowska, Urszula,Walsgrove, Timothy

, p. 5045 - 5047 (1992)

δ-Lactams have been synthesized with excellent stereocontrol of substituents by condensing 3-alkenamides with aryl aldehydes in polyphosphoric ester.

Stereoselective syntheses of substituted 5,6-dihydro-2(1H)-pyridinones in polyphosphate media

Marson,Grabowska,Fallah,Walsgrove,Eggleston,Baures

, p. 291 - 296 (2007/10/02)

δ-Lactams have been synthesized with excellent stereocontrol of substituents by condensing 3-alkenamides with aryl aldehydes in polyphosphoric ester. The scope of the condensation of 3-alkenamides with aryl aldehydes in several phosphate media is examined, and a rationale is proposed regarding γ-lactam versus δ-lactam formation.

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