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1260029-45-5

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1260029-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1260029-45-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,6,0,0,2 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1260029-45:
(9*1)+(8*2)+(7*6)+(6*0)+(5*0)+(4*2)+(3*9)+(2*4)+(1*5)=115
115 % 10 = 5
So 1260029-45-5 is a valid CAS Registry Number.

1260029-45-5Relevant articles and documents

The asymmetric synthesis of Sitagliptin, a selective dipeptidyl peptidase IV inhibitor for the treatment of type 2 diabetes

Liu, Feng,Yu, Wansheng,Ou, Wenhua,Wang, Xiaoke,Ruan, Libo,Li, Yiming,Peng, Xijiang,Tao, Xiaohu,Pan, Xianhua

, p. 230 - 232 (2010)

An efficient asymmetric synthesis of Sitagliptin, a new DPP-IV inhibitor for the treatment of type 2 diabetes mellitus has been developed. The beta-amino acid fragment of Sitagliptin was prepared by asymmetric Michael addition of the corresponding α, β-unsaturated ester to (R)-(α-methylbenzyl) benzylamine followed by a two-step elaboration to obtain N-boc beta-amino ester. Hydrolysis of the ester and coupling with the triazolopiperazine afforded Sitagliptin after cleavage of the N-boc group and salt formation. The overall yield was 31% over nine steps.

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