873402-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 873402-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,4,0 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 873402-80:
(8*8)+(7*7)+(6*3)+(5*4)+(4*0)+(3*2)+(2*8)+(1*0)=173
173 % 10 = 3
So 873402-80-3 is a valid CAS Registry Number.