183311-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183311-31-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,3,1 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 183311-31:
(8*1)+(7*8)+(6*3)+(5*3)+(4*1)+(3*1)+(2*3)+(1*1)=111
111 % 10 = 1
So 183311-31-1 is a valid CAS Registry Number.