99973-66-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99973-66-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,7 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 99973-66:
(7*9)+(6*9)+(5*9)+(4*7)+(3*3)+(2*6)+(1*6)=217
217 % 10 = 7
So 99973-66-7 is a valid CAS Registry Number.