| Label | Id | |
|---|---|---|
| Chalkogene | http://purl.obolibrary.org/obo/CHEBI_33303 | |
| Chroman | http://purl.obolibrary.org/obo/CHEBI_33224 | |
| Cibacalcin | http://purl.obolibrary.org/obo/CHEBI_3306 | |
| ClHgHgCl | http://purl.obolibrary.org/obo/CHEBI_33050 | |
| Cob(II)yrinate | http://purl.obolibrary.org/obo/CHEBI_33907 | |
| Cobyrinate | http://purl.obolibrary.org/obo/CHEBI_33907 | |
| Cobyrinsaeure | http://purl.obolibrary.org/obo/CHEBI_33907 | |
| Columbiananine | http://purl.obolibrary.org/obo/CHEBI_3340 | |
| Corrinoid | http://purl.obolibrary.org/obo/CHEBI_33913 | |
| Cr(-) | http://purl.obolibrary.org/obo/CHEBI_33010 | |
| Cr(2+) | http://purl.obolibrary.org/obo/CHEBI_33006 | |
| Cr(4+) | http://purl.obolibrary.org/obo/CHEBI_33009 | |
| Cr(5+) | http://purl.obolibrary.org/obo/CHEBI_33008 | |
| Cr(6+) | http://purl.obolibrary.org/obo/CHEBI_33007 | |
| Cr(CO)4 | http://purl.obolibrary.org/obo/CHEBI_33030 |