66635-70-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66635-70-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,3 and 5 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 66635-70:
(7*6)+(6*6)+(5*6)+(4*3)+(3*5)+(2*7)+(1*0)=149
149 % 10 = 9
So 66635-70-9 is a valid CAS Registry Number.