220696-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220696-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,6,9 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 220696-97:
(8*2)+(7*2)+(6*0)+(5*6)+(4*9)+(3*6)+(2*9)+(1*7)=139
139 % 10 = 9
So 220696-97-9 is a valid CAS Registry Number.