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|Section2= |Section3= |Section7= |Section8= }} Pararosaniline, Basic Red 9, or C.I. 42500 is an organic compound with the formula ()Cl. It is a magenta solid with a variety of uses as a dye.〔Thomas Gessner and Udo Mayer "Triarylmethane and Diarylmethane Dyes" in ''Ullmann's Encyclopedia of Industrial Chemistry'' 2002, Wiley-VCH, Weinheim.〕 It is one of the four components of basic fuchsine. (The others are rosaniline, new fuchsine and magenta II.)〔Horobin RW, Kiernan JA (2002) ''Conn's Biological Stains'', 10th ed. Oxford: BIOS.〕 It is structurally related to other triarylmethane dyes called methyl violets including crystal violet, which feature methyl groups on nitrogen. It is prepared by the condensation of aniline and para-aminobenzaldehyde. Alternative it arises from the oxidation of 4,4'-bis(aminophenyl)methane in the presence of aniline. ==Use as an indicator and for staining== It is used to dye polyacrylonitrile fibers. Pararosaniline is used as a colorimetric test for aldehydes, in the Schiff test. It is the only basic fuchsine component suitable for making the aldehyde-fuchsine stain for pancreatic islet beta cells. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pararosaniline」の詳細全文を読む スポンサード リンク
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