3d image of 4-aminopyridine skeletal formula

4-aminopyridine 4-ap fampridine dalfampridine pyridinamine pyridylamine tetraethylammonium carboxylic acid multiple sclerosis voltage gated tea inactivation potassium channel ampyra parkinson's tetrodotoxin ms convulsant fda 3d rendering chemical molecule molecular structural structure formula drug preparation medicine medication side effect action iatrogenic overdose contraindications interaction pharmacology pharmaceutics pharmacy pharmacodynamics pharmacokinetics pharmacophore aromatic