16682-89-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16682-89-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,8 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 16682-89:
(7*1)+(6*6)+(5*6)+(4*8)+(3*2)+(2*8)+(1*9)=136
136 % 10 = 6
So 16682-89-6 is a valid CAS Registry Number.