220645-76-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220645-76-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,6,4 and 5 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 220645-76:
(8*2)+(7*2)+(6*0)+(5*6)+(4*4)+(3*5)+(2*7)+(1*6)=111
111 % 10 = 1
So 220645-76-1 is a valid CAS Registry Number.