Synonym
                                        Azelastine hydrochloride (S)-, (S)-Azelastine hydrochloride
                                     
                                    
                                        IUPAC/Chemical Name
                                        1(2H)-Phthalazinone, 4-((4-chlorophenyl)methyl)-2-(hexahydro-1-methyl-1H-azepin-4-yl)-, monohydrochloride, (S)-
                                     
                                    
                                        InChi Key
                                        YEJAJYAHJQIWNU-FERBBOLQSA-N
                                     
                                    
                                        InChi Code
                                        1S/C22H24ClN3O.ClH/c1-25-13-4-5-18(12-14-25)26-22(27)20-7-3-2-6-19(20)21(24-26)15-16-8-10-17(23)11-9-16;/h2-3,6-11,18H,4-5,12-15H2,1H3;1H/t18-;/m0./s1
                                     
                                    
                                        SMILES Code
                                        Cl.CN1CCC[C@@H](CC1)N2N=C(Cc3ccc(Cl)cc3)c4ccccc4C2=O
                                     
                                    
                                    
                                        Purity
                                        >98% (or refer to the Certificate of Analysis)
                                     
                                    
                                        Shipping Condition
                                        Shipped under ambient temperature as non-hazardous chemical.  This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
                                     
                                    
                                        Storage Condition
                                        Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
                                     
                                    
                                        Solubility
                                        Soluble in DMSO
                                     
                                    
                                        Shelf Life
                                        >3 years if stored properly
                                     
                                    
                                        Drug Formulation
                                        This drug may be formulated in DMSO
                                     
                                    
                                        Stock Solution Storage
                                        0 - 4 C for short term (days to weeks), or -20 C for long term (months).
                                     
                                    
                                        HS Tariff Code
                                        2934.99.9001
                                     
                                    
                                 
                             
                            
                                                        
                                                                
                                    Preparing Stock Solutions
                                    
                                        The following data is based on the
                                        product
                                        molecular weight
                                        418.36
                                        Batch specific molecular weights may vary
                                        from batch to batch
                                        due to the degree of hydration, which will
                                        affect the solvent
                                        volumes required to prepare stock solutions.
                                    
                                    
                                    
                                        
                                            
                                            
                                                | Concentration / Solvent Volume / Mass | 
                                                1 mg | 
                                                5 mg | 
                                                10 mg | 
                                            
                                            
                                            
                                            
                                                | 1 mM | 
                                                1.15 mL | 
                                                5.76 mL | 
                                                11.51 mL | 
                                            
                                            
                                                | 5 mM | 
                                                0.23 mL | 
                                                1.15 mL | 
                                                2.3 mL | 
                                            
                                            
                                                | 10 mM | 
                                                0.12 mL | 
                                                0.58 mL | 
                                                1.15 mL | 
                                            
                                            
                                                | 50 mM | 
                                                0.02 mL | 
                                                0.12 mL | 
                                                0.23 mL | 
                                            
                                            
                                        
                                     
                                 
                                                             
                            
                            
                                
                                    1: Karpishchenko SA, Kolesnikova OM. [The effectiveness of the combination of azelastine hydrochloride and mometasone furoate for the intranasal application in the patients presenting with seasonal allergic rhinitis]. Vestn Otorinolaringol.  2017;82(5):44-47. doi: 10.17116/otorino201782544-47. Russian. PubMed PMID: 29072663.
2: Liu SC, Lin CS, Chen SG, Chu YH, Lee FP, Lu HH, Wang HW. Effect of budesonide  and azelastine on histamine signaling regulation in human nasal epithelial cells. Eur Arch Otorhinolaryngol. 2017 Feb;274(2):845-853. doi: 10.1007/s00405-016-4295-8. Epub 2016 Sep 13. PubMed PMID: 27623823.
3: Aksoy F, Senturk E, Doğan R, Veyseller B, Ozturan O, Gönüllü N, Yilmaz F. Effects of azelastine nasal spray on nasal and nasopharyngeal microflora. J Laryngol Otol. 2016 Jan;130(1):95-9. doi: 10.1017/S0022215115002959. Epub 2015 Oct 30. PubMed PMID: 26515526.  
Choudhury, K., Purty, R. S., & Khoba, K. (2024, April). Computational Drug Repositioning of Mast Cell Stabilizers against Human Protease-Activated Receptor 2 (PAR2) Involved in Rheumatoid Arthritis. In Proceedings (Vol. 103, No. 1, p. 75). MDPI.