223909-19-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223909-19-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,9,0 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 223909-19:
(8*2)+(7*2)+(6*3)+(5*9)+(4*0)+(3*9)+(2*1)+(1*9)=131
131 % 10 = 1
So 223909-19-1 is a valid CAS Registry Number.