著者

佃井 典子 持田 研秀

出版者

公益社団法人 日本薬学会

雑誌

衛生化学 (ISSN:0013273X)

巻号頁・発行日

vol.18, no.5, pp.320-323, 1972-10-31 (Released:2008-05-30)

参考文献数

7

被引用文献数

3 2

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Sulfonated sites in quinoline Yellow WS, which is distributed under the name of "D & C Yellow No.203"have not been clarified as yet. Treatment of 2-(2'-quinolyl)-1, 3-indandione with fuming sulfuric acid, gave several sulfonated products and two of product dye were identified as 2-(2'-quinolyl)-1, 3-indandione-6'-sulfonic acid and 2-(2'-quinoly)-1, 3-indandione-5, 6'-disulfonic acid by nuclear magnetic resonance, infrared and mass spectra. Commercial samples of quinoline Yellow WS consist of the disodium 2-(2'-quinolyl)-1, 3-indandione-5, 6'-disulfonate and contain other sulfonated derivatives.