77973-09-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77973-09-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,7 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77973-09:
(7*7)+(6*7)+(5*9)+(4*7)+(3*3)+(2*0)+(1*9)=182
182 % 10 = 2
So 77973-09-2 is a valid CAS Registry Number.