18328-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18328-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,3,2 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18328-81:
(7*1)+(6*8)+(5*3)+(4*2)+(3*8)+(2*8)+(1*1)=119
119 % 10 = 9
So 18328-81-9 is a valid CAS Registry Number.