18840-38-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18840-38-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,4 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 18840-38:
(7*1)+(6*8)+(5*8)+(4*4)+(3*0)+(2*3)+(1*8)=125
125 % 10 = 5
So 18840-38-5 is a valid CAS Registry Number.