19779-77-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19779-77-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,7 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19779-77:
(7*1)+(6*9)+(5*7)+(4*7)+(3*9)+(2*7)+(1*7)=172
172 % 10 = 2
So 19779-77-2 is a valid CAS Registry Number.