19662-79-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19662-79-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,6 and 2 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19662-79:
(7*1)+(6*9)+(5*6)+(4*6)+(3*2)+(2*7)+(1*9)=144
144 % 10 = 4
So 19662-79-4 is a valid CAS Registry Number.