18291-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18291-68-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,2,9 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 18291-68:
(7*1)+(6*8)+(5*2)+(4*9)+(3*1)+(2*6)+(1*8)=124
124 % 10 = 4
So 18291-68-4 is a valid CAS Registry Number.