13454-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13454-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,4,5 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 13454-99:
(7*1)+(6*3)+(5*4)+(4*5)+(3*4)+(2*9)+(1*9)=104
104 % 10 = 4
So 13454-99-4 is a valid CAS Registry Number.