吖啶是有機化合物和具有式C13H9N的氮雜環(huán)。吖啶是母環(huán)的取代衍生物。它是與蒽結(jié)構(gòu)相關(guān)的平面分子，其中中心CH基團(tuán)中的一個被氮氣取代。與吡啶和喹啉的相關(guān)分子一樣，吖啶是一種溫和的堿性物質(zhì)。它是一種幾乎無色的固體。它在針中結(jié)晶。
9-(2-Chlorophenyl)acridine
10-((2-Methoxyethoxy)methyl)acridin-9(10H)-one
1,2,3,4-Tetrahydroacridine
10-(4-Bromophenyl)-9,9-dimethyl-9,10-dihydroacridine
Methyl acridine-9-carboxylate
Acridine-9-thiol
Acridin-9(10H)-one
10H-Spiro[acridine-9,9'-fluorene]
2-(9-Oxoacridin-10(9H)-yl)acetic acid
7-Ethoxyacridine-3,9-diamine 2-hydroxypropanoate hydrate
9-(Bromomethyl)acridine
Acridine-9-carboxylic acid hydrate
Acridin-9-amine hydrochloride hydrate
4-Methoxyacridin-9-ol
9-Methylacridine
9-Mesityl-10-methylacridin-10-ium perchlorate
2,7-Dibromo-9,9-dimethyl-9,10-dihydroacridine
9-Aminoacridine
Acridine-9-carbaldehyde
9-Mesitylacridine
Phenyl acridine-9-carboxylate
9-Phenylacridine
9-Mesityl-10-methylacridin-10-ium tetrafluoroborate
10-Methylacridin-9(10H)-one
9,9-Dimethyl-9,10-dihydroacridine
9,10-Dihydroacridine
Acridine-9-carbonyl chloride
