99668-51-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99668-51-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,6 and 8 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99668-51:
(7*9)+(6*9)+(5*6)+(4*6)+(3*8)+(2*5)+(1*1)=206
206 % 10 = 6
So 99668-51-6 is a valid CAS Registry Number.