| Label | Id | |
|---|---|---|
| 1,4-butanediammonium | http://purl.obolibrary.org/obo/CHEBI_326268 | |
| butane-1,4-bis(aminium) | http://purl.obolibrary.org/obo/CHEBI_326268 | |
| butane-1,4-diaminium | http://purl.obolibrary.org/obo/CHEBI_326268 | |
| putrescine | http://purl.obolibrary.org/obo/CHEBI_326268 | |
| putrescinium(2+) | http://purl.obolibrary.org/obo/CHEBI_326268 | |
| putrescinium dication | http://purl.obolibrary.org/obo/CHEBI_326268 |