103980-91-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 103980-91-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,9,8 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 103980-91:
(8*1)+(7*0)+(6*3)+(5*9)+(4*8)+(3*0)+(2*9)+(1*1)=122
122 % 10 = 2
So 103980-91-2 is a valid CAS Registry Number.