443903-02-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 443903-02-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,3,9,0 and 3 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 443903-02:
(8*4)+(7*4)+(6*3)+(5*9)+(4*0)+(3*3)+(2*0)+(1*2)=134
134 % 10 = 4
So 443903-02-4 is a valid CAS Registry Number.