219957-91-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219957-91-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 219957-91:
(8*2)+(7*1)+(6*9)+(5*9)+(4*5)+(3*7)+(2*9)+(1*1)=182
182 % 10 = 2
So 219957-91-2 is a valid CAS Registry Number.
219957-91-2Relevant articles and documents
Thermodynamic and kinetic effects of the double coordination of carbonyl groups by bidentate Lewis acids
Vaugeois, Jean,Wuest, James D.
, p. 13016 - 13022 (1998)
Treatment of 1,2,3,4-tetrahexylbenzene or 1,2,4,5-tetrahexylbenzene with Hg(OOCCF3)2 produces 1,2-phenylenedimercury bis(trifluoroacetate) 7 or its 1,4-isomer 9, which are bidentate Lewis acids. IR studies in CH2Cl2/
