424839-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 424839-87-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,4,8,3 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 424839-87:
(8*4)+(7*2)+(6*4)+(5*8)+(4*3)+(3*9)+(2*8)+(1*7)=172
172 % 10 = 2
So 424839-87-2 is a valid CAS Registry Number.