66688-47-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66688-47-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,8 and 8 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 66688-47:
(7*6)+(6*6)+(5*6)+(4*8)+(3*8)+(2*4)+(1*7)=179
179 % 10 = 9
So 66688-47-9 is a valid CAS Registry Number.