5506-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5506-56-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,0 and 6 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 5506-56:
(6*5)+(5*5)+(4*0)+(3*6)+(2*5)+(1*6)=89
89 % 10 = 9
So 5506-56-9 is a valid CAS Registry Number.