284049-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 284049-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,4,0,4 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 284049-55:
(8*2)+(7*8)+(6*4)+(5*0)+(4*4)+(3*9)+(2*5)+(1*5)=154
154 % 10 = 4
So 284049-55-4 is a valid CAS Registry Number.