| Label | Id | |
|---|---|---|
| HCC(.) | http://purl.obolibrary.org/obo/CHEBI_30085 | |
| O=C=C=C=O | http://purl.obolibrary.org/obo/CHEBI_30086 | |
| [C(NH2)3](+) | http://purl.obolibrary.org/obo/CHEBI_30087 | |
| [C2](+) | http://purl.obolibrary.org/obo/CHEBI_30084 | |
| [C2](-) | http://purl.obolibrary.org/obo/CHEBI_30082 | |
| [C2](2-) | http://purl.obolibrary.org/obo/CHEBI_30081 | |
| acetate | http://purl.obolibrary.org/obo/CHEBI_30089 | |
| acetylenediide | http://purl.obolibrary.org/obo/CHEBI_30081 | |
| acetylide | http://purl.obolibrary.org/obo/CHEBI_30081 | |
| bellidifolin | http://purl.obolibrary.org/obo/CHEBI_3008 | |
| diaminomethaniminium | http://purl.obolibrary.org/obo/CHEBI_30087 | |
| dicarbide(1.-) | http://purl.obolibrary.org/obo/CHEBI_30082 | |
| dicarbide(2-) | http://purl.obolibrary.org/obo/CHEBI_30081 | |
| dicarbon | http://purl.obolibrary.org/obo/CHEBI_30083 | |
| dicarbon(1+) | http://purl.obolibrary.org/obo/CHEBI_30084 |