6683-88-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6683-88-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,8 and 3 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6683-88:
(6*6)+(5*6)+(4*8)+(3*3)+(2*8)+(1*8)=131
131 % 10 = 1
So 6683-88-1 is a valid CAS Registry Number.