84003-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84003-84-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,0,0 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 84003-84:
(7*8)+(6*4)+(5*0)+(4*0)+(3*3)+(2*8)+(1*4)=109
109 % 10 = 9
So 84003-84-9 is a valid CAS Registry Number.