438497-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 438497-80-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,8,4,9 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 438497-80:
(8*4)+(7*3)+(6*8)+(5*4)+(4*9)+(3*7)+(2*8)+(1*0)=194
194 % 10 = 4
So 438497-80-4 is a valid CAS Registry Number.