5526-58-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5526-58-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,2 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5526-58:
(6*5)+(5*5)+(4*2)+(3*6)+(2*5)+(1*8)=99
99 % 10 = 9
So 5526-58-9 is a valid CAS Registry Number.