66401-15-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66401-15-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,4,0 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 66401-15:
(7*6)+(6*6)+(5*4)+(4*0)+(3*1)+(2*1)+(1*5)=108
108 % 10 = 8
So 66401-15-8 is a valid CAS Registry Number.