Disodium 2-naphthol-3,6-disulfonate(135-51-3) IR2
                        
                        
                            
                                Molecular FormulaC10H9NaO7S2
                            
                            Molecular Weight328.28
  
                         
                        InChIInChI=1S/C10H8O7S2.Na.H/c11-9-4-6-1-2-8(18(12,13)14)3-7(6)5-10(9)19(15,16)17;;/h1-5,11H,(H,12,13,14)(H,15,16,17);;
                        InChIKey PQPUUGNKDCVCJR-UHFFFAOYSA-N
                        SmilesS(C1C(=CC2=CC=C(S(O)(=O)=O)C=C2C=1)O)(O)(=O)=O.[NaH]