| 2921 | Amine-function compounds | 14 | 156,621 |
| 2905 | Acyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives | 19 | 155,738 |
| 2936 | Provitamins and vitamins, natural or reproduced by synthesis (including natural concentrates), derivatives thereof used primarily as vitamins, and intermixtures of the foregoing, whether or not in any solvent | 10 | 123,669 |
| 2932 | Heterocyclic compounds with oxygen hetero-atom(s) only | 9 | 115,256 |
| 2915 | Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids | 15 | 106,079 |
| 2907 | Phenols | 8 | 91,544 |
| 2903 | Halogenated derivatives of hydrocarbons | 19 | 82,226 |
| 2933 | Heterocyclic compounds with nitrogen hetero-atom(s) only | 14 | 70,515 |
| 2922 | Oxygen-function amino-compounds | 10 | 59,961 |
| 2926 | Nitrile-function compounds | 4 | 54,750 |
| 2916 | Unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids | 11 | 52,212 |
| 2918 | Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids | 13 | 50,098 |
| 2942 | HS 2942 | 1 | 35,573 |
| 2902 | Cyclic hydrocarbons | 8 | 34,151 |
| 2914 | Ketones and quinones, whether or not with other oxygen function, and their halogenated, sulfonated, nitrated, or nitrosated derivatives | 12 | 32,430 |
| 2934 | Nucleic acids and their salts, whether or not chemically defined | 4 | 31,665 |
| 2924 | Carboxyamide-function compounds | 4 | 26,385 |
| 2912 | Aldehydes, whether or not with other oxygen function | 9 | 23,727 |
| 2930 | Organo-sulfur compounds | 4 | 23,329 |
| 2917 | Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids | 13 | 21,587 |
| 2909 | Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives | 7 | 13,621 |
| 2906 | Cyclic alcohols and their halogenated, sulfonated, nitrated or nitrosated derivatives | 5 | 11,403 |
| 2929 | Compounds with other nitrogen function | 2 | 8,476 |
| 2901 | Acyclic hydrocarbons | 5 | 5,607 |
| 2931 | Other organo-inorganic compounds | 2 | 5,466 |
| 2923 | Quaternary ammonium salts and hydroxides | 3 | 4,055 |
| 2927 | HS 2927 | 1 | 3,339 |
| 2920 | Esters of other inorganic acids of nonmetals (excluding esters of hydrogen halides) and their salts | 3 | 2,572 |
| 2904 | Sulfonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated | 3 | 2,561 |
| 2925 | Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds | 3 | 2,521 |
| 2928 | HS 2928 | 1 | 2,185 |
| 2910 | Epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulfonated, nitrated or nitrosated derivatives | 4 | 2,008 |
| 2937 | Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis | 4 | 1,990 |
| 2939 | Alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives | 1 | 1,713 |
| 2940 | HS 2940 | 1 | 1,265 |
| 2938 | Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives | 1 | 1,241 |
| 2919 | Phosphoric esters and their salts, including lactophosphates | 1 | 705 |
| 2941 | Antibiotics | 2 | 668 |
| 2935 | Sulfonamides | 1 | 292 |
| 2908 | Halogenated, sulfonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols | 1 | 277 |
| 2913 | HS 2913 | 1 | 239 |
| 2911 | HS 2911 | 1 | 198 |
