183874-31-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183874-31-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,8,7 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 183874-31:
(8*1)+(7*8)+(6*3)+(5*8)+(4*7)+(3*4)+(2*3)+(1*1)=169
169 % 10 = 9
So 183874-31-9 is a valid CAS Registry Number.