四甲基环丁烷-1,3-二酮, Tetramethylcyclobutane-1,3-dione

2,2,6,6-四甲基-3,5-庚烷二酮, 2,2,6,6-Tetramethyl-3,5-heptanedione

2,2,6,6-四甲基哌啶, 2,2,6,6-Tetramethylpiperidine

四甲基脲, Tetramethylurea

四苯基碘化磷鎓, Tetraphenylphosphonium Iodide

四硫富瓦烯, Tetrathiafulvalene

硒化铊(I), Thallium(I) selenide

噻唑-2-羧酸, Thiazole-2-carboxylic acid

噻吩并[3,2-b]噻吩, Thieno[3,2-b]thiophene

硫代乙酰胺, Thioacetamide