Advanced text search in ChEBI has several options

Type your query as free text in the search box and filter results by using or combining categories – an example is shown in Figure 10:

• All – this allows you to search all the categories
• ChEBI ID – allows searching for specific ChEBI identifiers
• ChEBI name – will search only for ChEBI names matching your search term
• Definition – will search for text in ChEBI definitions
• IUPAC name – will search for IUPAC names
• All Names – will search all the synonyms, ChEBI Names and IUPAC names available for this compound
• InChI/InChIKey – will search for InChIs matching your search criteria
• SMILES – will search for SMILES matching your search criteria
• Automatic Xrefs or Manual Xrefs – allows searching for accession numbers from other sources
• Registry Numbers – will search for Registry Numbers matching your search criteria such as CAS or Reaxys
• Citations – will search for citation identifiers such as PubMed Identifiers etc  
• Formula – will search for formula
• Mass – will search for molecular weight
• Monoisotopic mass – allows searching for the monoisotopic mass
• Charge – allows searching for the charge
• All species – allows searching for entities which have been detected in or isolated from living organisms, will search for species name (Homo sapiens etc.), and location (blood, urine etc.)

The plus and minus tabs can be used to add additional categories.