12543-22-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12543-22-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,5,4 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 12543-22:
(7*1)+(6*2)+(5*5)+(4*4)+(3*3)+(2*2)+(1*2)=75
75 % 10 = 5
So 12543-22-5 is a valid CAS Registry Number.