16311-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16311-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,3,1 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16311-81:
(7*1)+(6*6)+(5*3)+(4*1)+(3*1)+(2*8)+(1*1)=82
82 % 10 = 2
So 16311-81-2 is a valid CAS Registry Number.