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861792-67-8

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861792-67-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 861792-67-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,1,7,9 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 861792-67:
(8*8)+(7*6)+(6*1)+(5*7)+(4*9)+(3*2)+(2*6)+(1*7)=208
208 % 10 = 8
So 861792-67-8 is a valid CAS Registry Number.

861792-67-8Relevant articles and documents

Highly practical and cost-efficient synthesis of telmisartan: An antihypertensive drug

Wang, Ping,Zheng, Guo-Jun,Wang, Ya-Ping,Wang, Xiang-Jing,Wei, He-Geng,Xiang, Wen-Sheng

, p. 2509 - 2512 (2012/04/11)

A novel and cost-efficient strategy for synthesis of an antihypertensive drug telmisartan, a substituted bis-benzimidazole derivative, is described. The key strategy is the construction of bis-benzimidazole 4 by reductive cyclization of o-nitroanilines 11 with butyl aldehyde and cyclocondensation of aromatic aldehydes 9 with o-phenylenediamine, then N-alkylation is allowed to give the target compound telmisartan after hydrolysis. The simple operation and workup procedure, along with the low production costs, make it suitable for industrial production and will benefits those with cardiovascular disease.

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