23145-71-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23145-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,1,4 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 23145-71:
(7*2)+(6*3)+(5*1)+(4*4)+(3*5)+(2*7)+(1*1)=83
83 % 10 = 3
So 23145-71-3 is a valid CAS Registry Number.