28439-83-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28439-83-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,4,3 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 28439-83:
(7*2)+(6*8)+(5*4)+(4*3)+(3*9)+(2*8)+(1*3)=140
140 % 10 = 0
So 28439-83-0 is a valid CAS Registry Number.