2 NO = N + O ; {nitric oxide}
3 NO2 = N + 2O ; {nitrogen dioxide}
4 NO3 = N + 3O ; {nitrogen trioxide}
5 N2O5 = 2N + 5O ; {dinitrogen pentoxide}
6 HONO = H + 2O + N ; {nitrous acid}
7 HNO3 = H + N + 3O ; { nitric acid }
8 PNA = H + 4 O + N ; {HO2NO2 peroxynitric acid}
9 O1D_CB4 = O ; {oxygen atomic first singlet state}
10 O = O ; {oxygen atomic ground state (3P)}
11 HO = O + H ; {hydroxyl radical}
13 HO2 = H + 2O ; {perhydroxyl radical}
14 H2O2 = 2H + 2O ; {hydrogen peroxide}
15 HCHO = C + 2H + O ; {formalydehyde}
16 ALD2 = IGNORE ; {high molecular weight aldehides}
17 C2O3 = 2C + 3H + 3O ; {CH3CO(O)OO peroxyacyl radical}
18 PAN = 2C + 3H + 5O + N ; {CH3C(O)OONO2, peroxyacyl nitrate}
19 PAR = IGNORE ; {parafin carbon bond}
20 ROR = IGNORE ; {secondary organic oxy radical}
21 OLE = IGNORE ; {olefinic carbon bond}
22 ETH = 2C + 4H ; {CH2=CH2 ethene}
23 TOL = 7C + 8H ; {C6H5-CH3 toluene}
24 CRES = IGNORE ; {cresol and h.m.w. phenols}
25 TO2 = IGNORE ; {toluene-hydroxyl radical adduct}
26 CRO = IGNORE ; {methylphenoxy radical}
27 OPEN = IGNORE ; {h.m.w. aromatic oxidation ring fragment}
28 XYL = 8C + 10H ; {C6H4-(CH3)2 xylene}
29 MGLY = 3C + 4H + 2O ; {CH3C(O)C(O)H methylglyoxal}
30 ISOP = IGNORE ; {isoprene}
31 XO2 = IGNORE ; {NO-to-NO2 operation}
32 XO2N = IGNORE ; {NO-to-nitrate operation}
33 CO = C + O ; {carbon monoxide}
35 H2O = H + 2O ; {water}