873203-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873203-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,2,0 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 873203-89:
(8*8)+(7*7)+(6*3)+(5*2)+(4*0)+(3*3)+(2*8)+(1*9)=175
175 % 10 = 5
So 873203-89-5 is a valid CAS Registry Number.