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223541-23-9

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223541-23-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223541-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,5,4 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 223541-23:
(8*2)+(7*2)+(6*3)+(5*5)+(4*4)+(3*1)+(2*2)+(1*3)=99
99 % 10 = 9
So 223541-23-9 is a valid CAS Registry Number.

223541-23-9Downstream Products

223541-23-9Relevant articles and documents

Cyclizations via enamine intermediates with amine dehydrogenations

M?hrle,Mehrens

, p. 214 - 224 (2007/10/03)

The mercury-edta dehydrogenation of the 4'-aminosubstituted-acetophenones 1, 8a and 9a produced the ring cleavaged derivatives 7, 11a and 12a, while the piperidine and its derivatives 10a - 10e gave rise to tetracyclic compounds 16a - 16e and to methylenedi-enamines 19a - 19d, the additionally C-1-fragment in 19a - 19d probably coming from mercury edta. With addition of m-nitrobenzaldehyde to the mercury-edta dehydrogenation of substituted phenylpiperidines another route only generated the di-enamines 22.

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