19166-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19166-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,1,6 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19166-77:
(7*1)+(6*9)+(5*1)+(4*6)+(3*6)+(2*7)+(1*7)=129
129 % 10 = 9
So 19166-77-9 is a valid CAS Registry Number.