320401-53-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 320401-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,0,4,0 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 320401-53:
(8*3)+(7*2)+(6*0)+(5*4)+(4*0)+(3*1)+(2*5)+(1*3)=74
74 % 10 = 4
So 320401-53-4 is a valid CAS Registry Number.