pobilukast [ 2-hydroxy-3-((2-carboxyethyl)thio)-3-(2-(8-phenyloctyl)phenyl)propanoic acid,SK&F 104353,SK&F 104353-Z2,SK&F-104353,SKF 104353,pobilukast edamine,pobilukast edamine, (R-(R*,S*))-isomer,pobilukast, sodium salt ] a leukotriene receptor antagonist; an antiasthmatic agent; structure in first source; RN refers to (R-(R*,S*)-isomer