872303-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 872303-71-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,3,0 and 3 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 872303-71:
(8*8)+(7*7)+(6*2)+(5*3)+(4*0)+(3*3)+(2*7)+(1*1)=164
164 % 10 = 4
So 872303-71-4 is a valid CAS Registry Number.