173257-72-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 173257-72-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,2,5 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 173257-72:
(8*1)+(7*7)+(6*3)+(5*2)+(4*5)+(3*7)+(2*7)+(1*2)=142
142 % 10 = 2
So 173257-72-2 is a valid CAS Registry Number.
173257-72-2Relevant articles and documents
Bromination of N,N'-Bis(arylsulfonyl)-1,4-benzoquinonediimines and 1,4-Phenylenediamines
Avdeenko, A. P.,Velichko, N. V.
, p. 221 - 225 (2007/10/02)
Depending on the solvent, molar reactant ratio, and other conditions, bromination of N,N'-bis(arylsulfonyl)-1,4-benzoquinonediimines and N,N'-bis(arylsulfonyl)-1,4-phenylenediamines yields 1,4-bis(arylsulfonylimino)-5,6-dibromo-2-cyclohexenes, N,N'-bis(ar
