The Zafirlukast, with the CAS registry number 107753-78-6, is also known as Cyclopentyl [3-[[2-methoxy-4-[(2-methylphenyl)sulfonylcarbamoyl]phenyl]methyl]-1-methyl-indol-5-yl]aminoformate. It belongs to the product categories of APIs; Zafirlukast; All Inhibitors; Inhibitors; Intermediates & Fine Chemicals; Pharmaceuticals; Heterocycles; Sulfur & Selenium Compounds. This chemical's molecular formula is C₃₁H₃₃N₃O₆S and molecular weight is 575.68. What's more, its IUPAC name is called Cyclopentyl N-[3-[[2-methoxy-4-[(2-methylphenyl)sulfonylcarbamoyl]phenyl]methyl]-1-methylindol-5-yl]carbamate. Zafirlukast is an oral leukotriene receptor antagonist (LTRA) for the maintenance treatment of asthma. It is often used in conjunction with an inhaled steroid and/or long-acting bronchodilator.

Physical properties about Zafirlukast are: (1)ACD/LogP: 6.15; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 4.76; (4)ACD/LogD (pH 7.4): 4.17; (5)ACD/BCF (pH 5.5): 1142.69; (6)ACD/BCF (pH 7.4): 289.19; (7)ACD/KOC (pH 5.5): 2170.38; (8)ACD/KOC (pH 7.4): 549.28; (9)#H bond acceptors: 9; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 8; (12)Polar Surface Area: 106.53 Å²; (13)Index of Refraction: 1.64; (14)Molar Refractivity: 156.41 cm³; (15)Molar Volume: 433.6 cm³; (16)Surface Tension: 51 dyne/cm; (17)Density: 1.32 g/cm³.

Preparation of Zafirlukast: this chemical can be prepared by 5-nitrobenzpyrole with 4-(brooethyl)-3-methoxyl-methyl benzoate. This reaction needs reagents dioxane, dichloromethane, hexane.

You can still convert the following datas into molecular structure:
(1) SMILES: O=S(=O)(c1ccccc1C)NC(=O)c2ccc(c(OC)c2)Cc4c3cc(ccc3n(c4)C)NC(=O)OC5CCCC5
(2) InChI: InChI=1S/C31H33N3O6S/c1-20-8-4-7-11-29(20)41(37,38)33-30(35)22-13-12-21(28(17-22)39-3)16-23-19-34(2)27-15-14-24(18-26(23)27)32-31(36)40-25-9-5-6-10-25/h4,7-8,11-15,17-19,25H,5-6,9-10,16H2,1-3H3,(H,32,36)(H,33,35)
(3) InChIKey: YEEZWCHGZNKEEK-UHFFFAOYSA-N