77444-97-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77444-97-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,4 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77444-97:
(7*7)+(6*7)+(5*4)+(4*4)+(3*4)+(2*9)+(1*7)=164
164 % 10 = 4
So 77444-97-4 is a valid CAS Registry Number.