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109519-45-1

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109519-45-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109519-45-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,1 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 109519-45:
(8*1)+(7*0)+(6*9)+(5*5)+(4*1)+(3*9)+(2*4)+(1*5)=131
131 % 10 = 1
So 109519-45-1 is a valid CAS Registry Number.

109519-45-1Relevant articles and documents

Reaction of C-(Triphenylphosphinimido)hydrazones with Isocyanates as a Route to 5-Arylamino- and 5-Alkylamino-1H-1,2,4-triazoles

Bruche, Luca,Garanti, Luisa,Zecchi, Gaetano

, p. 2177 - 2180 (2007/10/02)

Treatment of C-(triphenylphosphinimido)hydrazone (1) with aryl and alkyl isocyanates results in 5-arylamino- and 5-alkylamino-1H-1,2,4-triazoles (5), often accompanied by a minor quantity of the triazol-5-one (7).The related ortho-acyl-substituted substrates (8) react with phenyl isocyanate to give triazoloquinazolines (12) or (13) through the intermediacy of aminotriazoles (11).

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