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1377432-87-5

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1377432-87-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1377432-87-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,7,4,3 and 2 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1377432-87:
(9*1)+(8*3)+(7*7)+(6*7)+(5*4)+(4*3)+(3*2)+(2*8)+(1*7)=185
185 % 10 = 5
So 1377432-87-5 is a valid CAS Registry Number.

1377432-87-5Relevant articles and documents

Novel pyrrolopyrimidine analogues as potent dipeptidyl peptidase IV inhibitors based on pharmacokinetic property-driven optimization

Xie, Hui,Zeng, Lili,Zeng, Shaogao,Lu, Xin,Zhang, Guicheng,Zhao, Xin,Cheng, Na,Tu, Zhengchao,Li, Zhiyuan,Xu, Hongjiang,Yang, Ling,Zhang, Xiquan,Huang, Min,Zhao, Junling,Hu, Wenhui

, p. 205 - 212 (2012/07/17)

We previously reported a highly potent DPP-IV inhibitor 6 with low in vivo efficacy. While trying to maintain consistent in vitro and in vivo biological activity, we initiated a pharmacokinetic property-driven optimization to improve the metabolic stability and permeability of inhibitor 6. A simple scaffold replacement of thienopyrimidine with pyrrolopyrimidine (21a) led to significantly improved metabolic stability (4% vs. 65% remaining). Further modification of the pyrrolopyrimidine scaffold to produce compound 21j resulted in much better oral bioavailability than 6. Importantly, compound 21j exhibits greater in vivo efficacy than does 6 and Alogliptin and is worthy of further development.

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