| 2922 | | Oxygen-function amino-compounds: | | | | |
| 2922.50 | | Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function: | | | | |
| 2924 | | Carboxyamide-function compounds; amide-function compounds of carbonic acid: | | | | |
| 2925 | | Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds: | | | | |
| 2926 | | Nitrile-function compounds: | | | | |
| 2927.00 | | Diazo-, azo- or azoxy-compounds: | | | | |
| 2929 | | Compounds with other nitrogen function: | | | | |
| 2930 | | X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS, AND SULFONAMIDES | | | | |
| 2930 | | Organo-sulfur compounds: | | | | |
| 2930.90.43 | 20 | Compounds containing a phosphorus atom to which is bonded one methyl, ethyl, n-propyl or isopropyl group, but no other carbon atoms | kg | | | |
| 2930.90.91 | 25 | Other compounds containing a phosphorus atom to which is bonded one methyl, ethyl, n-propyl or isopropyl group, but no other carbon atoms Other: | kg | | | |
| 2931.00 | | Other organo-inorganic compounds: | | | | |
| 2931.00.90 | 10 | Organo-silicon compounds | kg | | | |
| 2931.00.90 | 21 | Organo-tin compounds: | | | | |
| 2931.00.90 | 41 | Organo-phosphorus compounds: | | | | |
| 2932 | | Heterocyclic compounds with oxygen hetero-atom(s) only: | | | | |
| 2932.11.00 | 00 | Compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: | | | | |
| 2933 | | Heterocyclic compounds with nitrogen hetero-atom(s) only: | | | | |
| 2933.11.00 | 00 | Compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure: | | | | |
| 2933.21.00 | 00 | Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure: | | | | |
| 2933.31.00 | 00 | Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure: | | | | |
| 2933.41.00 | 00 | Compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused: | | | | |
| 2933.52 | | Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure: | | | | |
| 2933.61.00 | 00 | Compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure: | | | | |
| 2934 | | Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds: | | | | |
