求助默克上的信息，CAS号: 68238？Monograph Number: 0008987 Title: Sulphan Blue CAS Registry Number: 129-17-9 CAS Name: N-(2,4-disulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-ethylethanaminium inner salt, sodium salt Additional Names: C.I. Acid Blue 1; -2,4-disulfobenzylidene]-2,5-cyclohexadien-1-ylidene]diethylammonium hydroxide inner salt sodium salt; anhydro-4,4¢-bis(diethylamino)triphenylmethanol-2¢¢,4¢¢-disulfonic acid monosodium salt; C.I. Food Blue 3; C.I. 42045 Trademarks: Disulphine Blue (Zeneca) Molecular Formula: C27H31N2NaO6S2 Molecular Weight: 566.66 Percent Composition: C 57.23%, H 5.51%, N 4.94%, Na 4.06%, O 16.94%, S 11.32% Literature References: Prepn from 4-formylbenzene-1,3-disulfonic acid and diethylaniline: Colour Index vol. 4 (3rd ed., 1971) p 4382. Properties: Violet powder. One gram dissolves in 20 ml water at 20°. Dilute aq solns are blue and turn yellow upon the addition of concd hydrochloric acid. In the absence of strong acid or caustic the blue color is stable over a wide pH range. Partly sol in alcohol. Derivative Type: 2,5-Disulfophenyl isomer CAS Registry Number: 68238-36-8 Additional Names: Isosulfan blue Trademarks: Lymphazurin (Pharmascience) Use: Coloring medicinal products; in dyeing and printing wool, silk. Therap-Cat: Isosulfan blue as diagnostic aid (lymphangiography).查看更多
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