79719-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 79719-21-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,7,1 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 79719-21:
(7*7)+(6*9)+(5*7)+(4*1)+(3*9)+(2*2)+(1*1)=174
174 % 10 = 4
So 79719-21-4 is a valid CAS Registry Number.