189223-90-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189223-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,2,2 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 189223-90:
(8*1)+(7*8)+(6*9)+(5*2)+(4*2)+(3*3)+(2*9)+(1*0)=163
163 % 10 = 3
So 189223-90-3 is a valid CAS Registry Number.