5820-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5820-31-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,8,2 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5820-31:
(6*5)+(5*8)+(4*2)+(3*0)+(2*3)+(1*1)=85
85 % 10 = 5
So 5820-31-5 is a valid CAS Registry Number.