2559-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2559-68-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,5 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2559-68:
(6*2)+(5*5)+(4*5)+(3*9)+(2*6)+(1*8)=104
104 % 10 = 4
So 2559-68-4 is a valid CAS Registry Number.