74688-66-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74688-66-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,6,8 and 8 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 74688-66:
(7*7)+(6*4)+(5*6)+(4*8)+(3*8)+(2*6)+(1*6)=177
177 % 10 = 7
So 74688-66-7 is a valid CAS Registry Number.