189556-52-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189556-52-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,5,5 and 6 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 189556-52:
(8*1)+(7*8)+(6*9)+(5*5)+(4*5)+(3*6)+(2*5)+(1*2)=193
193 % 10 = 3
So 189556-52-3 is a valid CAS Registry Number.
189556-52-3Relevant articles and documents
Nitrosation of N-Methyl-4-tolylsulfonylguanidine
Leis, J. Ramon,Norberto, Fatima,Moreira, Jose A.,Iley, Jim
, p. 88 - 89 (1997)
Kinetic studies for the nitrosation of N-methyl-4-tolylsulfonylguanidine identify a mechanism involving rapid nitrosation of the N-methyl nitrogen atom followed by slow, general-base-catalysed proton transfer.