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180285-12-5

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180285-12-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 180285-12-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,0,2,8 and 5 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 180285-12:
(8*1)+(7*8)+(6*0)+(5*2)+(4*8)+(3*5)+(2*1)+(1*2)=125
125 % 10 = 5
So 180285-12-5 is a valid CAS Registry Number.

180285-12-5Relevant articles and documents

Asymmetric synthesis; XXXVII: Synthesis of 2,6-disubstituted piperazines from chiral non-racemic lactams

Schanen, Vincent,Cherrier, Marie-Pierre,De Melo, Sebastiào Jose,Quirion, Jean-Charles,Husson, Henri-Philippe

, p. 833 - 837 (2007/10/03)

General and convenient syntheses of optically active 2,6-disubstituted piperazines are described. The method is based on diastereoselective alkylation of lactam 8 derived from (R)-(-)-phenylglycinol followed by a regio- and diastereoselective functionalisation of carbamates 10c and 10d. This procedure allowed the preparation of new α-amino acids 15 and 16.

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