| Label | Id | |
|---|---|---|
| 1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione - ethane-1,2-diamine (2:1) | http://purl.obolibrary.org/obo/CHEBI_2659 | |
| 3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione, compd with 1,2-ethanediamine (2:1) | http://purl.obolibrary.org/obo/CHEBI_2659 | |
| theophylline, compd with ethylenediamine (2:1) | http://purl.obolibrary.org/obo/CHEBI_2659 | |
| ethylenediamine, compd. with theophylline (1:2) | http://purl.obolibrary.org/obo/CHEBI_2659 |