77919-22-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77919-22-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,1 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77919-22:
(7*7)+(6*7)+(5*9)+(4*1)+(3*9)+(2*2)+(1*2)=173
173 % 10 = 3
So 77919-22-3 is a valid CAS Registry Number.