223919-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223919-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,9,1 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 223919-43:
(8*2)+(7*2)+(6*3)+(5*9)+(4*1)+(3*9)+(2*4)+(1*3)=135
135 % 10 = 5
So 223919-43-5 is a valid CAS Registry Number.