549504-98-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 549504-98-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,9,5,0 and 4 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 549504-98:
(8*5)+(7*4)+(6*9)+(5*5)+(4*0)+(3*4)+(2*9)+(1*8)=185
185 % 10 = 5
So 549504-98-5 is a valid CAS Registry Number.