873203-87-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873203-87-3 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 7 respectively.
Calculate Digit Verification of CAS Registry Number 873203-87:
(8*8)+(7*7)+(6*3)+(5*2)+(4*0)+(3*3)+(2*8)+(1*7)=173
173 % 10 = 3
So 873203-87-3 is a valid CAS Registry Number.