77444-99-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77444-99-6 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 9 respectively.
Calculate Digit Verification of CAS Registry Number 77444-99:
(7*7)+(6*7)+(5*4)+(4*4)+(3*4)+(2*9)+(1*9)=166
166 % 10 = 6
So 77444-99-6 is a valid CAS Registry Number.