218281-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218281-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,2,8 and 1 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 218281-45:
(8*2)+(7*1)+(6*8)+(5*2)+(4*8)+(3*1)+(2*4)+(1*5)=129
129 % 10 = 9
So 218281-45-9 is a valid CAS Registry Number.