| Label | Id | |
|---|---|---|
| (protoporphyrinato)iron(II) | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| Fe(ppIX) | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| Haem | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| Heme | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| Protoheme | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| [3,7,12,17-tetramethyl-8,13-divinylporphyrin-2,18-dipropanoato(2-)]iron(II) | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| [Fe(ppIX)] | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| ferroprotoheme | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| protoferroheme | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| ferroheme b | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| ferroprotoporphyrin IX | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| ferrous protoheme | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| ferrous protoheme IX | http://purl.obolibrary.org/obo/CHEBI_17627 | |
| iron(II) protoporphyrin IX | http://purl.obolibrary.org/obo/CHEBI_17627 |