Disclosed are an alpha 7 nAChR receptor modulator compound, 4-(5-(4-chlorophenyl)-2-(2-cyclopropylacetyl)-1,4-dimethyl-1H-pyrrol-3-yl)benzenesulfonamide, its tautomeric form, its pharmaceutically acceptable salts, pharmaceutical compositions comprising the compound or a salt thereof, and a method of treating various diseases, disorders or conditions, for example, Alzheimer’s disease, mild cognitive impairment, senile dementia, vascular dementia, dementia of Parkinson’s disease, and attention deficit disorder.所揭露的是α7 nAChR受體調節劑化合物，4-(5-(4-氯苯基)-2-(2-環丙基乙醯基)-1,4-二甲基-1氫-吡咯-3-基)苯磺醯胺、其互變異構物形式、其藥學可接受鹽類、包含該化合物或其鹽類的藥學組成物，以及治療各種疾病、失調或病症的方法，例如，阿茲海默症、輕度認知障礙、老年癡呆、血管型失智症、帕金森氏症的失智症以及注意力缺失疾患。
