220686-73-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220686-73-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,6,8 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 220686-73:
(8*2)+(7*2)+(6*0)+(5*6)+(4*8)+(3*6)+(2*7)+(1*3)=127
127 % 10 = 7
So 220686-73-7 is a valid CAS Registry Number.