18031-11-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18031-11-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,0,3 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18031-11:
(7*1)+(6*8)+(5*0)+(4*3)+(3*1)+(2*1)+(1*1)=73
73 % 10 = 3
So 18031-11-3 is a valid CAS Registry Number.