1616668-18-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1616668-18-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,6,6,6 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1616668-18:
(9*1)+(8*6)+(7*1)+(6*6)+(5*6)+(4*6)+(3*8)+(2*1)+(1*8)=188
188 % 10 = 8
So 1616668-18-8 is a valid CAS Registry Number.