438544-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 438544-68-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,8,5,4 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 438544-68:
(8*4)+(7*3)+(6*8)+(5*5)+(4*4)+(3*4)+(2*6)+(1*8)=174
174 % 10 = 4
So 438544-68-4 is a valid CAS Registry Number.