| cid_compinfo | Convert CID to SMILES |
| cir_query | Query Chemical Identifier Resolver |
| csid_compinfo | Get record details (CSID, StdInChIKey, StdInChI, SMILES) by ChemSpider ID |
| csid_extcompinfo | Get extended record details by ChemSpider ID |
| cts_compinfo | Get record details from Chemical Translation Service (CTS) |
| cts_convert | Convert Ids using Chemical Translation Service (CTS) |
| get_cid | Retrieve Pubchem Id (CID) |
| get_csid | Retrieve ChemSpider ID |