3d image of pentylenetetrazol skeletal formula

pentylenetetrazol pentylenetetrazole leptazol metrazol pentetrazol pentamethylenetetrazol corazol cardiazol deumacard ptz respiratory stimulant circulatory convulsions seizures electroconvulsive therapy cardio-respiratory stimulant cough suppressant gaba-a receptor anticonvulsant status epilepticus anxiogenic discriminative stimulus l-type calcium channel ligands substance matter material compound component agent stuff reagent functional group precursor synthesis reaction production building block molecule molecular formula skeletal structural structure geometry 3d scientific research organic chemical