223128-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223128-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,1,2 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 223128-83:
(8*2)+(7*2)+(6*3)+(5*1)+(4*2)+(3*8)+(2*8)+(1*3)=104
104 % 10 = 4
So 223128-83-4 is a valid CAS Registry Number.