2558-88-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2558-88-5 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 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 2558-88:
(6*2)+(5*5)+(4*5)+(3*8)+(2*8)+(1*8)=105
105 % 10 = 5
So 2558-88-5 is a valid CAS Registry Number.