218903-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218903-24-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,9,0 and 3 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 218903-24:
(8*2)+(7*1)+(6*8)+(5*9)+(4*0)+(3*3)+(2*2)+(1*4)=133
133 % 10 = 3
So 218903-24-3 is a valid CAS Registry Number.