55563-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55563-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,5,6 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 55563-80:
(7*5)+(6*5)+(5*5)+(4*6)+(3*3)+(2*8)+(1*0)=139
139 % 10 = 9
So 55563-80-9 is a valid CAS Registry Number.