| Label | Id | |
|---|---|---|
| ATTA | http://purl.obolibrary.org/obo/CHEBI_33024 | |
| ATTA-Eu(3+) | http://purl.obolibrary.org/obo/CHEBI_33025 | |
| Acepress | http://purl.obolibrary.org/obo/CHEBI_3380 | |
| Actinoid | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| Actinoide | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| Actinoidenelemente | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| Actinoidengruppe | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| Aktinium | http://purl.obolibrary.org/obo/CHEBI_33337 | |
| Aktinoide | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| Aktinoidenelemente | http://purl.obolibrary.org/obo/CHEBI_33320 | |
| Al(0) | http://purl.obolibrary.org/obo/CHEBI_33629 | |
| Al(OH)3 | http://purl.obolibrary.org/obo/CHEBI_33130 | |
| Al2(+) | http://purl.obolibrary.org/obo/CHEBI_33621 | |
| Alkylmercury | http://purl.obolibrary.org/obo/CHEBI_33255 | |
| Aln | http://purl.obolibrary.org/obo/CHEBI_33629 |