121198-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121198-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,1,9 and 8 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121198-90:
(8*1)+(7*2)+(6*1)+(5*1)+(4*9)+(3*8)+(2*9)+(1*0)=111
111 % 10 = 1
So 121198-90-1 is a valid CAS Registry Number.