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224647-18-1

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224647-18-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 224647-18-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,4,6,4 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 224647-18:
(8*2)+(7*2)+(6*4)+(5*6)+(4*4)+(3*7)+(2*1)+(1*8)=131
131 % 10 = 1
So 224647-18-1 is a valid CAS Registry Number.

224647-18-1Relevant articles and documents

Enzymatic route to chiral, nonracemic cis-2,6- and cis,cis-2,4,6-substituted piperidines. Synthesis of (+)-dihydropinidine and dendrobate alkaloid (+)-241D

Chenevert, Robert,Dickman, Michael

, p. 3332 - 3341 (2007/10/03)

Piperidine-based compounds are an important class of natural alkaloids found in plants, insects, and amphibians. A general asymmetric synthesis of 2-alkyl-6-methylpiperidines is presented via the enzymatic desymmetrization of meso cis-2,6- and cis,cis-2,4,6-substituted piperidines with Aspergillus niger lipase (ANL). The enzymatic reaction proceeds in excellent chemical yield and high enantiotopic selectivity (ee ≥ 98%). The general method is used to effect the synthesis of (±)-dihydropinidine-HCl as well as the first asymmetric synthesis of dendrobate alkaloid (+)-241D.

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