4439-34-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4439-34-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,3 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4439-34:
(6*4)+(5*4)+(4*3)+(3*9)+(2*3)+(1*4)=93
93 % 10 = 3
So 4439-34-3 is a valid CAS Registry Number.