401818-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 401818-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,1,8,1 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 401818-89:
(8*4)+(7*0)+(6*1)+(5*8)+(4*1)+(3*8)+(2*8)+(1*9)=131
131 % 10 = 1
So 401818-89-1 is a valid CAS Registry Number.