Dipotassium (2E)-3-Oxo-2-(3-Oxo-5-Sulfonato-1,3-Dihydro-2H-Indol-2-Ylidene)-5-Indolinesulfonate
[CAS# 13725-33-2]

Identification

• Classification: Chemical reagent >> Organic reagent >> Sulfonate / sulfinate
• Name: Dipotassium (2E)-3-Oxo-2-(3-Oxo-5-Sulfonato-1,3-Dihydro-2H-Indol-2-Ylidene)-5-Indolinesulfonate
• Synonyms: Indigodisulfonic Acid Dipotassium Salt
• Molecular Formula: C₁₆H₈K₂N₂O₈S₂
• Molecular Weight: 498.57
• CAS Registry Number: 13725-33-2
• SMILES: c1cc2c(cc1S(=O)(=O)[O-])C(=O)/C(=C\3/C(=O)c4cc(ccc4N3)S(=O)(=O)[O-])/N2.[K+].[K+]
• InChI: 1S/C16H10N2O8S2.2K/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b14-13+
• InChIKey: PLXHLMUZUKUFAR-QDBORUFSSA-L

Properties

• Refractive index: (Cal.)