| Alcohols (256 tracked articles) |
| Aldehydes (47 tracked articles) |
| Amides (185 tracked articles) |
| Amidines (139 tracked articles) |
| Amines (391 tracked articles) |
| Anhydrides (1 tracked article) |
| Arsenicals (1 tracked article) |
| Aza Compounds (18 tracked articles) |
| Azides (1 tracked article) |
| Azo Compounds (2 tracked articles) |
| Boron Compounds (2 tracked articles) |
| Carboxylic Acids (247 tracked articles) |
| Carboxylic Acids (255 tracked articles) |
| Coordination Complexes (4 tracked articles) |
| Cyanates (3 tracked articles) |
| Dioxins and Dioxin-like Compounds (5 tracked articles) |
| Ethers (25 tracked articles) |
| Free Radicals (91 tracked articles) |
| Hydrazines (5 tracked articles) |
| Hydrocarbons (935 tracked articles) |
| Imides (4 tracked articles) |
| Imines (3 tracked articles) |
| Isocyanates (22 tracked articles) |
| Ketones (91 tracked articles) |
| Lactones (93 tracked articles) |
| Luciferins (3 tracked articles) |
| Nitrates (29 tracked articles) |
| Nitriles (20 tracked articles) |
| Nitrites (14 tracked articles) |
| Nitro Compounds (13 tracked articles) |
| Nitroso Compounds (8 tracked articles) |
| Onium Compounds (11 tracked articles) |
| Organometallic Compounds (20 tracked articles) |
| Organophosphorus Compounds (44 tracked articles) |
| Organoselenium Compounds (1 tracked article) |
| Organosilicon Compounds (9 tracked articles) |
| Quinones (44 tracked articles) |
| Sulfur Compounds (146 tracked articles) |
| Triazenes (3 tracked articles) |
| Volatile Organic Compounds (18 tracked articles) |