99971-99-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99971-99-0 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 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99971-99:
(7*9)+(6*9)+(5*9)+(4*7)+(3*1)+(2*9)+(1*9)=220
220 % 10 = 0
So 99971-99-0 is a valid CAS Registry Number.