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225089-43-0

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225089-43-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 225089-43-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,5,0,8 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 225089-43:
(8*2)+(7*2)+(6*5)+(5*0)+(4*8)+(3*9)+(2*4)+(1*3)=130
130 % 10 = 0
So 225089-43-0 is a valid CAS Registry Number.

225089-43-0Relevant articles and documents

Hypervalent λ(n)-iodane-mediated fragmentation of tertiary cyclopropanol systems II: Application to asymmetric syntheses of piperidine and indolizidine alkaloids

Kirihara, Masayuki,Nishio, Takashi,Yokoyama, Satoshi,Kakuda, Hiroko,Momose, Takefumi

, p. 2911 - 2926 (2007/10/03)

The asymmetric synthesis of (-)-pinidine and its enantiomer was accomplished by starting from norgranatanone via the asymmetric enolization, stereoselective cyclopropanation, and oxidative ring cleavage of the resulting cyclopropanol system with a hypervalent λ(n)-iodane as key steps. Formal asymmetric synthesis of (+)-indolizidine 223AB was also performed via the asymmetric enolization and oxidative ring cleavage of the resulting cyclopropanol system as key steps.

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