2145-73-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2145-73-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,4 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2145-73:
(6*2)+(5*1)+(4*4)+(3*5)+(2*7)+(1*3)=65
65 % 10 = 5
So 2145-73-5 is a valid CAS Registry Number.