吖啶是有机化合物和具有式C13H9N的氮杂环。吖啶是母环的取代衍生物。它是与蒽结构相关的平面分子，其中中心CH基团中的一个被氮气取代。与吡啶和喹啉的相关分子一样，吖啶是一种温和的碱性物质。它是一种几乎无色的固体。它在针中结晶。
9,10-Dihydroacridine
Acridine-9-carbonyl chloride
Acridine-3,6-diamine
2-Aminoacridin-9(10H)-one
2-Chloroacridin-9(10H)-one
3-(3-Methyl-3H-diazirin-3-yl)propanoic acid
10-Phenylacridin-9(10H)-one
7-Fluoro-9-oxo-9,10-dihydroacridine-2-carboxylic acid
4-(Acridin-9-ylamino)benzoic acid
Acridine-9-carboxylic acid xhydrate
9-Mesityl-10-methylacridin-10-ium hexafluorophosphate(V)
3,6-Di-tert-butyl-9-mesityl-10-methylacridin-10-ium tetrafluoroborate
9-Mesityl-10-methylacridin-10-ium iodide
Acridin-4-amine
9-Chloro-7-methyl-1,2,3,4-tetrahydroacridine
4,4,8,8,12,12-Hexamethyl-8,12-dihydro-4H-benzo[1,9]quinolizino[3,4,5,6,7-defg]acridine
9,9-Dimethyl-10-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-9,10-dihydroacridine
10H,10'H-9,9'-Spirobi[acridine]
4-Bromo-9,9-dimethyl-9,10-dihydroacridine
6-Ethoxyacridine-1,4-diamine
7-Ethoxyacridine-3,9-diamine hydrochloride
N9-(2,2-Dimethoxyethyl)-7-ethoxyacridine-3,9-diamine
10-(Oxiran-2-ylmethyl)acridin-9(10H)-one
4-Nitroacridine
