4141-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4141-43-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,4 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4141-43:
(6*4)+(5*1)+(4*4)+(3*1)+(2*4)+(1*3)=59
59 % 10 = 9
So 4141-43-9 is a valid CAS Registry Number.