18863-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18863-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,8,6 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18863-43:
(7*1)+(6*8)+(5*8)+(4*6)+(3*3)+(2*4)+(1*3)=139
139 % 10 = 9
So 18863-43-9 is a valid CAS Registry Number.