66697-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66697-04-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,9 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 66697-04:
(7*6)+(6*6)+(5*6)+(4*9)+(3*7)+(2*0)+(1*4)=169
169 % 10 = 9
So 66697-04-9 is a valid CAS Registry Number.