5547-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5547-61-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,4 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5547-61:
(6*5)+(5*5)+(4*4)+(3*7)+(2*6)+(1*1)=105
105 % 10 = 5
So 5547-61-5 is a valid CAS Registry Number.