22617-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 22617-66-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,6,1 and 7 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 22617-66:
(7*2)+(6*2)+(5*6)+(4*1)+(3*7)+(2*6)+(1*6)=99
99 % 10 = 9
So 22617-66-9 is a valid CAS Registry Number.