66838-80-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66838-80-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,3 and 8 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 66838-80:
(7*6)+(6*6)+(5*8)+(4*3)+(3*8)+(2*8)+(1*0)=170
170 % 10 = 0
So 66838-80-0 is a valid CAS Registry Number.