1543-41-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1543-41-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,4 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1543-41:
(6*1)+(5*5)+(4*4)+(3*3)+(2*4)+(1*1)=65
65 % 10 = 5
So 1543-41-5 is a valid CAS Registry Number.