268221-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 268221-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,8,2,2 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 268221-91:
(8*2)+(7*6)+(6*8)+(5*2)+(4*2)+(3*1)+(2*9)+(1*1)=146
146 % 10 = 6
So 268221-91-6 is a valid CAS Registry Number.