438044-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 438044-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,8,0,4 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 438044-55:
(8*4)+(7*3)+(6*8)+(5*0)+(4*4)+(3*4)+(2*5)+(1*5)=144
144 % 10 = 4
So 438044-55-4 is a valid CAS Registry Number.