54159-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54159-42-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,1,5 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 54159-42:
(7*5)+(6*4)+(5*1)+(4*5)+(3*9)+(2*4)+(1*2)=121
121 % 10 = 1
So 54159-42-1 is a valid CAS Registry Number.