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1231894-17-9

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1231894-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1231894-17-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,8,9 and 4 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1231894-17:
(9*1)+(8*2)+(7*3)+(6*1)+(5*8)+(4*9)+(3*4)+(2*1)+(1*7)=149
149 % 10 = 9
So 1231894-17-9 is a valid CAS Registry Number.

1231894-17-9Relevant articles and documents

Novel synthesis of 2-aminobenzimidazoles from isoselenocyanates

Xie, Yuanyuan,Zhang, Fan,Li, Jianjun,Shi, Xiangjun

, p. 901 - 904 (2010)

An efficient one-pot procedure for the synthesis of 2-aminobenzimidazoles from isoselenocyanates and various substituted diamines is described. Precipitation of elemental selenium from the reaction mixture greatly simplifies the purification procedure and also allows it to be re-used for preparation of isoseleno?cyanates. A possible mechanism for the formation of 2-aminobenzimidazoles is proposed. Georg Thieme Verlag Stuttgart - New York.

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