668261-63-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 668261-63-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,8,2,6 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 668261-63:
(8*6)+(7*6)+(6*8)+(5*2)+(4*6)+(3*1)+(2*6)+(1*3)=190
190 % 10 = 0
So 668261-63-0 is a valid CAS Registry Number.