219944-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 219944-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,9,9,4 and 4 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 219944-89:
(8*2)+(7*1)+(6*9)+(5*9)+(4*4)+(3*4)+(2*8)+(1*9)=175
175 % 10 = 5
So 219944-89-5 is a valid CAS Registry Number.