99916-58-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99916-58-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,1 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 99916-58:
(7*9)+(6*9)+(5*9)+(4*1)+(3*6)+(2*5)+(1*8)=202
202 % 10 = 2
So 99916-58-2 is a valid CAS Registry Number.