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                                                                Synonyms: PC-904 | PC904 | WY-44,417 | WY-44417
                                 
                                                         
                            Compound class: 
                                                            Synthetic organic
                                 
                                
                                    
                                        Comment: Apalcillin (PC-904) is a semisynthetic penicillin (β-lactam) derivative antibacterial [1-2].  It is highly active against Pseudomonas species. Toxicity issues meant that this compound did not progress beyond preclinical evaluation.
                                    
                                 
                            
                            
                          
                                
                                    
                                
                          
                                   
                                   
                                  
                                    
                                    
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Classification ![]()  | 
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| Compound class | Synthetic organic | 
IUPAC Name ![]()  | 
                                                        
| (2S,5R,6R)-3,3-dimethyl-7-oxo-6-[[(2R)-2-[(4-oxo-1H-1,5-naphthyridine-3-carbonyl)amino]-2-phenylacetyl]amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid | 
International Nonproprietary Names ![]()  | 
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| INN number | INN | 
| 4422 | apalcillin | 
Synonyms ![]()  | 
                                                        
| PC-904 | PC904 | WY-44,417 | WY-44417 | 
Database Links ![]()  | 
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| Specialist databases | |
                                                                        Antibiotic DB
                                                                        
                                                                              
                                                                        
                                                                             
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                                                                    Apalcillin (PC-904) | 
| Other databases | |
| CAS Registry No. | 63469-19-2 (source: WHO INN record) | 
| ChEMBL Ligand | CHEMBL3306902 | 
| DrugCentral Ligand | 227 | 
| GtoPdb PubChem SID | 405560200 | 
| PubChem CID | 6602341 | 
| Search Google for chemical match using the InChIKey | XMQVYNAURODYCQ-SLFBBCNNSA-N | 
| Search Google for chemicals with the same backbone | XMQVYNAURODYCQ | 
| Search PubMed clinical trials | apalcillin | 
| Search PubMed titles | apalcillin | 
| Search PubMed titles/abstracts | apalcillin | 
| UniChem Compound Search for chemical match using the InChIKey | XMQVYNAURODYCQ-SLFBBCNNSA-N | 
| UniChem Connectivity Search for chemical match using the InChIKey | XMQVYNAURODYCQ-SLFBBCNNSA-N |