40311-87-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40311-87-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,3,1 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 40311-87:
(7*4)+(6*0)+(5*3)+(4*1)+(3*1)+(2*8)+(1*7)=73
73 % 10 = 3
So 40311-87-3 is a valid CAS Registry Number.