| 29 | | | HS Code for Organic chemicals |
| 2933 | | HS Code for Heterocyclic compounds with nitrogen hetero-atom(s) only |
| | 29336921 | Isocyanuric acid |
| | 29336922 | Trichloroisocyanuric acid |
| | 29336929 | Other isocyanuric acid chlorinated derivatives |
| | 29336990 | Other structures containing non-fused triazine ring compounds (whether or not hydrogenated) |
| | 29337100 | 6-caprolactam |
| | 29337200 | Chloramphenicol and methylepiperone |
| | 29337900 | Other lactam |
| | 29339100 | Alprazolam, carbamazepam and their salts |
| | 29339200 | Methylthiophosphate (iso) |
| | 29339900 | Other heterocyclic compounds containing only nitrogen heteroatoms |