117683-52-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117683-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,8 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 117683-52:
(8*1)+(7*1)+(6*7)+(5*6)+(4*8)+(3*3)+(2*5)+(1*2)=140
140 % 10 = 0
So 117683-52-0 is a valid CAS Registry Number.
117683-52-0Relevant articles and documents
Geminal Bis-Onio Substitution at Trigonal Electron-Deficient Carbon
Weiss, Robert,Roth, Reinhard
, p. 870 - 872 (1987)
Geminal bis-onio substitution in systems with highly electrophilic trigonal carbon centers can be achieved by means of the reagent pair 4-dimethylaminopyridine/trimethylsilyltriflate.Structural features of these novel electrophiles are discussed on the ba
