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119493-23-1

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119493-23-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119493-23-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,4,9 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 119493-23:
(8*1)+(7*1)+(6*9)+(5*4)+(4*9)+(3*3)+(2*2)+(1*3)=141
141 % 10 = 1
So 119493-23-1 is a valid CAS Registry Number.

119493-23-1Relevant articles and documents

Reactivity and Diastereoselectivity in Inverse-Type Hetero-Diels-Alder Dihydropyran Syntheses

Apparao, Satyam,Maier, Martin E.,Schmidt, Richard R.

, p. 900 - 904 (1987)

β-Acyloxy-α-phenylthio-substituted α,β-unsaturated carbonyl compounds 3a-i and 4c,f, having different electron withdrawing carbon substituents at the carbonyl group, afford with ethyl vinyl ether as heterodienophile the dihydropyrans 5a-i and 6c,f, respec

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