55284-68-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55284-68-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,2,8 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 55284-68:
(7*5)+(6*5)+(5*2)+(4*8)+(3*4)+(2*6)+(1*8)=139
139 % 10 = 9
So 55284-68-9 is a valid CAS Registry Number.