66251-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66251-16-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,2,5 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 66251-16:
(7*6)+(6*6)+(5*2)+(4*5)+(3*1)+(2*1)+(1*6)=119
119 % 10 = 9
So 66251-16-9 is a valid CAS Registry Number.