402831-56-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 402831-56-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,8,3 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 402831-56:
(8*4)+(7*0)+(6*2)+(5*8)+(4*3)+(3*1)+(2*5)+(1*6)=115
115 % 10 = 5
So 402831-56-5 is a valid CAS Registry Number.