ketotifen molecule, molecular structures, antiallergic agents, 3d model, structural chemical formula and atoms with color coding

ketotifen zaditor molecule molecular structure chemical formula model c19h19nos antiallergic agents atom hydrogen oxygen nitrogen carbon render sheet chemistry drug science composition medicine atomic ball structural itchy drawing asthma fever illustration conventional organic alcaftadine antihistamine conjunctivitis flat histamine lastacaft loratadine neurotransmitter ophrys ophthalmic rhinitis urticarial structures atoms color coding coding