| Hexamethonium | Organic compounds | Organic nitrogen compounds | Organonitrogen compounds | Quaternary ammonium salts | Details |
| Azosemide | Organic compounds | Organoheterocyclic compounds | Azoles | Tetrazoles | Details |
| Glibornuride | Organic compounds | Lipids and lipid-like molecules | Prenol lipids | Monoterpenoids | Details |
| Glafenine | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Aminoquinolines and derivatives | Details |
| Gemeprost | Organic compounds | Lipids and lipid-like molecules | Fatty Acyls | Fatty alcohols | Details |
| Fusafungine | Organic compounds | Organic acids and derivatives | Peptidomimetics | Depsipeptides | Details |
| Fursultiamine | Organic compounds | Organoheterocyclic compounds | Diazines | Pyrimidines and pyrimidine derivatives | Details |
| Dimetotiazine | Organic compounds | Organoheterocyclic compounds | Benzothiazines | Phenothiazines | Details |
| Fominoben | Organic compounds | Benzenoids | Benzene and substituted derivatives | Anilides | Details |
| Flurothyl | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Ethers | Details |
| Fluprednidene | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Hydroxysteroids | Details |
| Fluocortolone | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Hydroxysteroids | Details |
| Flumequine | Organic compounds | Organoheterocyclic compounds | Quinolines and derivatives | Quinoline carboxylic acids | Details |
| Fluclorolone acetonide | Organic compounds | Lipids and lipid-like molecules | Steroids and steroid derivatives | Hydroxysteroids | Details |
| Flubendazole | Organic compounds | Benzenoids | Benzene and substituted derivatives | Benzophenones | Details |
| Florantyrone | Organic compounds | Benzenoids | Benzene and substituted derivatives | Butyrophenones | Details |
| Fentonium | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| Fenspiride | Organic compounds | Organoheterocyclic compounds | Azaspirodecane derivatives | Not Available | Details |
| Fendiline | Organic compounds | Benzenoids | Benzene and substituted derivatives | Diphenylmethanes | Details |
| Fenbufen | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| Etozoline | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Etofibrate | Organic compounds | Benzenoids | Benzene and substituted derivatives | Phenoxyacetic acid derivatives | Details |
| Etofenamate | Organic compounds | Benzenoids | Benzene and substituted derivatives | Benzoic acids and derivatives | Details |
| Etilefrine | Organic compounds | Benzenoids | Phenols | 1-hydroxy-4-unsubstituted benzenoids | Details |
| Etifoxine | Organic compounds | Organoheterocyclic compounds | Benzoxazines | Not Available | Details |
| Etidocaine | Organic compounds | Organic acids and derivatives | Carboxylic acids and derivatives | Amino acids, peptides, and analogues | Details |
| Ethoheptazine | Organic compounds | Organoheterocyclic compounds | Azepanes | Not Available | Details |
| Etamivan | Organic compounds | Benzenoids | Phenols | Methoxyphenols | Details |
| Eprazinone | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Carbonyl compounds | Details |
| Epirizole | Organic compounds | Organic oxygen compounds | Organooxygen compounds | Ethers | Details |