81332-18-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81332-18-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,3 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81332-18:
(7*8)+(6*1)+(5*3)+(4*3)+(3*2)+(2*1)+(1*8)=105
105 % 10 = 5
So 81332-18-5 is a valid CAS Registry Number.