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54674-18-9

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54674-18-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54674-18-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,7 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 54674-18:
(7*5)+(6*4)+(5*6)+(4*7)+(3*4)+(2*1)+(1*8)=139
139 % 10 = 9
So 54674-18-9 is a valid CAS Registry Number.

54674-18-9Downstream Products

54674-18-9Relevant articles and documents

Cycloadditions of nitrile oxides to α,β-unsaturated aldehydes. Frontier orbital interactions and secondary orbital interactions at work in determining regiochemistry

Toma, Lucio,Quadrelli, Paolo,Perrini, Giancarlo,Gandolfi, Remo,Di Valentin, Cristiana,Corsaro, Antonino,Caramella, Pierluigi

, p. 4299 - 4309 (2007/10/03)

The regiochemistry of the cycloadditions of nitrile oxides to crotonaldehyde and cinnamaldehyde has been determined and is dictated by frontier orbital interactions and secondary orbital interactions as well. In cycloadditions to α,β-unsaturated compounds the directive effect of the frontier orbital interactions can be diverted by steric drifts and secondary orbital interactions. (C) 2000 Elsevier Science Ltd.

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