5565-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5565-50-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,6 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 5565-50:
(6*5)+(5*5)+(4*6)+(3*5)+(2*5)+(1*0)=104
104 % 10 = 4
So 5565-50-4 is a valid CAS Registry Number.