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1093981-22-6

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1093981-22-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1093981-22-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,9,3,9,8 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1093981-22:
(9*1)+(8*0)+(7*9)+(6*3)+(5*9)+(4*8)+(3*1)+(2*2)+(1*2)=176
176 % 10 = 6
So 1093981-22-6 is a valid CAS Registry Number.

1093981-22-6Relevant articles and documents

Photochemical arylation of Bronsted acids with 2-azidobenzimidazole

Sudakow, Alex,Jones, Peter G.,Lindel, Thomas

, p. 681 - 684 (2012)

Irradiation of N-benzylated 2-azidobenzimidazoles at 300 nm in the presence of an excess amount of carboxylic acids results in a novel regioselective synthesis of 2-amino-6-oxybenzimidazoles in isolated yields of 60-70 %. It is also possible to regioselectively introduce 6-bromo, 6-chloro, and 6-triflyloxy groups. Irradiation in dichloromethane in the absence of external nucleophiles revealed that after loss of nitrogen, the benzimidazolylnitrene probably undergoes coarctate ring opening to an N-cyano diaza-o-xylylene intermediate. Photolysis of 2-azidobenzimidazoles in the presence of carboxylic or sulfonic acidsleads to regioselective oxygenation of the 6-position in good yield. Copyright

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