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180580-54-5

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180580-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 180580-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,0,5,8 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 180580-54:
(8*1)+(7*8)+(6*0)+(5*5)+(4*8)+(3*0)+(2*5)+(1*4)=135
135 % 10 = 5
So 180580-54-5 is a valid CAS Registry Number.

180580-54-5Relevant 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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