540804-04-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 540804-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,0,8,0 and 4 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 540804-04:
(8*5)+(7*4)+(6*0)+(5*8)+(4*0)+(3*4)+(2*0)+(1*4)=124
124 % 10 = 4
So 540804-04-4 is a valid CAS Registry Number.