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                                                                Synonyms: ABDNAZ [2] | RRx-001 | RRx001
                                 
                                                         
                            
                            
                            
                                Compound class: 
                                                            Synthetic organic
                                 
                                
                                    
                                        Comment: RRx-001 (EpicentRx) was originally developed as an anti-tumour agent [3]; it promotes apoptosis, and has radio- , chemo- and immuno-sensitising actions in cancer models. It also provides cytoprotective effects in normal tissues, which has led to the proposal of RRx-001 as a supportive care drug in patients undergoing cytotoxic cancer therapy. RRx-001 was identified using phenotypic screening, so its molecular mechanism of action was initially unclear. Several mechanisms have subsequently been identified, including NLRP3 inflammasome inhibition [1,4] and CD47/SIRP-α immune checkpoint inhibition. RRx-001 covalently targets the cysteine 409 residue in NLRP3's NACHT domain and blocks NLRP3/NEK7 interaction and assembly of the inflammasome complex. This ultimately inhibits release of active pro-inflammatory cytokines (IL-1β and IL-18). 
                            
                            
                          
                                
                                    
                                
                          
                                   
                                   
                                  
                                      
                                     
                                   
                                   
                                    
                                    
                                    RRx-001's chemical structure is a match for the INN nibrozetone (proposed INN list 130 of Feb. 2024).  | 
                                    
                                        
                                         
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Classification ![]()  | 
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| Compound class | Synthetic organic | 
IUPAC Name ![]()  | 
                                                        
| 2-bromo-1-(3,3-dinitroazetidin-1-yl)ethanone | 
International Nonproprietary Names ![]()  | 
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| INN number | INN | 
| 12836 | nibrozetone | 
Synonyms ![]()  | 
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| ABDNAZ [2] | RRx-001 | RRx001 | |
Database Links ![]()  | 
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| ChEMBL Ligand | CHEMBL3526802 | 
| DrugBank Ligand | DB12060 | 
| GtoPdb PubChem SID | 491299966 | 
| PubChem CID | 15950826 | 
| Search Google for chemical match using the InChIKey | JODKFOVZURLVTG-UHFFFAOYSA-N | 
| Search Google for chemicals with the same backbone | JODKFOVZURLVTG | 
| Search PubMed clinical trials | nibrozetone | 
| Search PubMed titles | nibrozetone | 
| Search PubMed titles/abstracts | nibrozetone | 
| UniChem Compound Search for chemical match using the InChIKey | JODKFOVZURLVTG-UHFFFAOYSA-N | 
| UniChem Connectivity Search for chemical match using the InChIKey | JODKFOVZURLVTG-UHFFFAOYSA-N | 
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                                                                           RRx-001 (links to external site) 
                                                                    
                                                                Cat. No. HY-16438  |