66934-16-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66934-16-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,9,3 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 66934-16:
(7*6)+(6*6)+(5*9)+(4*3)+(3*4)+(2*1)+(1*6)=155
155 % 10 = 5
So 66934-16-5 is a valid CAS Registry Number.