7454-19-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7454-19-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,5 and 4 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 7454-19:
(6*7)+(5*4)+(4*5)+(3*4)+(2*1)+(1*9)=105
105 % 10 = 5
So 7454-19-5 is a valid CAS Registry Number.