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98799-44-1

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98799-44-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98799-44-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,7,9 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 98799-44:
(7*9)+(6*8)+(5*7)+(4*9)+(3*9)+(2*4)+(1*4)=221
221 % 10 = 1
So 98799-44-1 is a valid CAS Registry Number.

98799-44-1Relevant articles and documents

Direct Synthesis of Benzophenanthridines and Benzophenanthridones via SRN1 Reactions

Beugelmans, Rene,Chastanet, Jacqueline,Ginsburg, Helene,Quintero-Cortes, Leticia,Roussi, Georges

, p. 4933 - 4938 (2007/10/02)

A straightforward and high-yield route to the 11,12-dihydrobenzophenanthridine (3) and 11,12-dihydrobenzophenanthridone (14) ring systems is based upon an SRN1 reaction between 2-halobenzylamines 1 or 2-halobenzoic acids 11 and enolates derived from tetralones 2.The efficient dehydrogenation of 3 or 14 gives the benzophenthridines 4 or benzophenanthridones 15.Use of properly substituted reactants leads to nitidine, avicine, and fagaronine and to analogues of those natural products.

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