113311-57-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 113311-57-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,3,1 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 113311-57:
(8*1)+(7*1)+(6*3)+(5*3)+(4*1)+(3*1)+(2*5)+(1*7)=72
72 % 10 = 2
So 113311-57-2 is a valid CAS Registry Number.
113311-57-2Relevant articles and documents
SYNTHESIS AND RECYCLIZATION OF 4-CHLOROMETHYLFLAVYLIUM AND 4-CHLOROMETHYLBENZOTHIAPYRILIUM SALTS
Tolkunov, S. V.,Dulenko, V. I.
, p. 633 - 635 (1987)
Condensation of α-chloro-o-hydroxyacetophenones in the presence of perchloric acid yields 4-chloromethylflavylium perchlorates. 4-Chloromethylbenzothiapyrilium perchlorates were obtained by intramolecular cyclization of 2-arylmercapto-5-chloropentanones-4
