438454-19-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 438454-19-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,8,4,5 and 4 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 438454-19:
(8*4)+(7*3)+(6*8)+(5*4)+(4*5)+(3*4)+(2*1)+(1*9)=164
164 % 10 = 4
So 438454-19-4 is a valid CAS Registry Number.