540520-74-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 540520-74-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,4,0,5,2 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 540520-74:
(8*5)+(7*4)+(6*0)+(5*5)+(4*2)+(3*0)+(2*7)+(1*4)=119
119 % 10 = 9
So 540520-74-9 is a valid CAS Registry Number.