RelNo  Symbol  Name  References

1  MW  molecular weight 
Todeschini, R. &. Consonni, V., Handbook of Molecular
Descriptors. WileyVCH, Weinheim (Germany), (2000).

2  AMW  average molecular weight 
3  Sv  sum of atomic van der Waals volumes (scaled on Carbon atom) 
4  Se  sum of atomic Sanderson electronegativities (scaled on Carbon atom) 
5  Sp  sum of atomic polarizabilities (scaled on Carbon atom) 
6  Ss  sum of KierHall electrotopological states 
7  Mv  mean atomic van der Waals volume (scaled on Carbon atom) 
8  Me  mean atomic Sanderson electronegativity (scaled on Carbon atom) 
9  Mp  mean atomic polarizability (scaled on Carbon atom) 
10  Ms  mean electrotopological state 
11  nAT  number of atoms 
12  nSK  number of nonH atoms 
13  nBT  number of bonds 
14  nBO  number of nonH bonds 
15  nBM  number of multiple bonds 
16  SCBO  sum of conventional bond orders (Hdepleted) 
17  ARR  aromatic ratio 
18  nCIC  number of rings 
19  nCIR  number of circuits 
20  RBN  number of rotatable bonds 
21  RBF  rotatable bond fraction 
22  nDB  number of double bonds 
23  nTB  number of triple bonds 
24  nAB  number of aromatic bonds 
25  nH  number of Hydrogen atoms 
26  nC  number of Carbon atoms 
27  nN  number of Nitrogen atoms 
28  nO  number of Oxygen atoms 
29  nP  number of Phosphorous atoms 
30  nS  number of Sulfur atoms 
31  nF  number of Fluorine atoms 
32  nCL  number of Chlorine atoms 
33  nBR  number of Bromine atoms 
34  nI  number of Iodine atoms 
35  nB  number of Boron atoms 
36  nHM  number of heavy atoms 
37  nX  number of halogen atoms 
38  nR03  number of 3membered rings 
39  nR04  number of 4membered rings 
40  nR05  number of 5membered rings 
41  nR06  number of 6membered rings 
42  nR07  number of 7membered rings 
43  nR08  number of 8membered rings 
44  nR09  number of 9membered rings 
45  nR10  number of 10membered rings 
46  nR11  number of 11membered rings 
47  nR12  number of 12membered rings 
48  nBnz  number of benzenelike rings 