16980-25-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16980-25-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,8 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 16980-25:
(7*1)+(6*6)+(5*9)+(4*8)+(3*0)+(2*2)+(1*5)=129
129 % 10 = 9
So 16980-25-9 is a valid CAS Registry Number.