66497-72-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66497-72-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,9 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 66497-72:
(7*6)+(6*6)+(5*4)+(4*9)+(3*7)+(2*7)+(1*2)=171
171 % 10 = 1
So 66497-72-1 is a valid CAS Registry Number.