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Azelastine EP Impurity D An impurity of Azelastine. Azelastine is a selective histamine H1 receptor antagonist used primarily for the treatment of allergic rhinitis and perennial rhinitis, including the relief of nasal congestion, runny nose, sneezing and itchy nose. Synonyms: 4-p-Chlorobenzyl-1(2H)-phthalazinone; 4-[(4-Chlorophenyl)methyl]-1(2H)-phthalazinone; 4-(4-Chlorobenzyl)-1(2H)-phthalazinone; 4-(4-Chloro-benzyl)-2H-phthalazin-1-one; 4-(4-Chlorobenzyl)phthalazin-1(2H)-one; 4-(4-Chlorobenzyl)phthalazin-1-ol; 4-[(4-Chlorophenyl)methyl]phthalazin-1(2H)-one; USP Azelastine Related Compound D; Azelastine related compound D; Azelastine USP Related Compound D; Azelastine Impurity D. Grade: ≥95%. CAS No. 53242-88-9. Molecular formula: C15H11ClN2O. Mole weight: 270.71. BOC Sciences 6
Azelastine EP Impurity E Azelastine EP Impurity E. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: (Z)-3-(4-chlorobenzylidene)isobenzofuran-1(3H)-one. CAS No. 105279-16-1. Molecular formula: C15H9ClO2. Mole weight: 256.68. Catalog: APB105279161. Alfa Chemistry Analytical Products 4
1-Benzoyl-2-(1-methylhexahydro-1H-azepin-4-yl)diazane An impurity of Azelastine. Azelastine is a selective histamine H1 receptor antagonist used primarily for the treatment of allergic rhinitis and perennial rhinitis, including the relief of nasal congestion, runny nose, sneezing and itchy nose. Synonyms: Benzoic acid, 2-(hexahydro-1-methyl-1H-azepin-4-yl)hydrazide; Azelastine EP impurity B; 1-Benzoyl-2-((4RS)-1-methylhexahydro-1H-azepin-4-yl)diazane; (+/-)-1-Benzoyl-2-(1-methylhexahydro-1H-azepin-4-yl)diazane; Benzoic acid N'-(1-methyl-azepan-4-yl)-hydrazide; Azelastine Hydrochloride Impurity B. Grade: 95%. CAS No. 110406-94-5. Molecular formula: C14H21N3O. Mole weight: 247.34. BOC Sciences 3
(Z)-3-(4-Chlorobenzylidene)isobenzofuran-1(3H)-one An impurity of Azelastine. Azelastine is a selective histamine H1 receptor antagonist used primarily for the treatment of allergic rhinitis and perennial rhinitis, including the relief of nasal congestion, runny nose, sneezing and itchy nose. Synonyms: Azelastine EP Impurity E (Z-Isomer); (3Z)-3-[(4-Chlorophenyl)methylene]-1(3H)-isobenzofuranone; (Z)-3-[(4-Chlorophenyl)methylene]-1(3H)-isobenzofuranone; (Z)-Azelastine hydrochloride impurity E; (Z)-3-(4-Chlorobenzal)phthalide; Azelastine Hydrochloride Imp. E (EP) Z-Isomer; Azelastine Imp. E (EP) Z-Isomer; Azelastine Impurity E (Z-Isomer). Grade: ≥95%. CAS No. 105279-16-1. Molecular formula: C15H9ClO2. Mole weight: 256.68. BOC Sciences 3

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