Tetrapotassium (2E)-3-Oxo-2-(3-Oxo-5,7-Disulfonato-1,3-Dihydro-2H-Indol-2-Ylidene)-5,7-Indolinedisulfonate
[CAS 28699-96-9]

Identification

• Classification: Chemical reagent >> Organic reagent >> Sulfonate / sulfinate
• Name: Tetrapotassium (2E)-3-Oxo-2-(3-Oxo-5,7-Disulfonato-1,3-Dihydro-2H-Indol-2-Ylidene)-5,7-Indolinedisulfonate
• Synonyms: 5,5′,7,7′-Indigotetrasulfonic acid tetrapotassium salt; Indigotetrasulfonic Acid Tetrapotassium Salt Hydrate; Potassium indigotetrasulfonate
• Molecular Formula: C₁₆H₆K₄N₂O₁₄S₄
• Molecular Weight: 734.88
• CAS Registry Number: 28699-96-9
• SMILES: [K+].[K+].[K+].[K+].[O-]S(=O)(=O)c4cc3C(=O)\C(=C2\C(=O)c1cc(cc(c1N2)S([O-])(=O)=O)S([O-])(=O)=O)Nc3c(c4)S([O-])(=O)=O
• InChI: 1S/C16H10N2O14S4.4K/c19-15-7-1-5(33(21,22)23)3-9(35(27,28)29)11(7)17-13(15)14-16(20)8-2-6(34(24,25)26)4-10(12(8)18-14)36(30,31)32;;;;/h1-4,17-18H,(H,21,22,23)(H,24,25,26)(H,27,28,29)(H,30,31,32);;;;/q;4*+1/p-4/b14-13+
• InChIKey: SWRJFVUVNXWCRX-XURWPRCOSA-J

Properties

• Refractive index: (Cal.)