8-Hydroxypyrene-1,3,6-trisulfonic acid trisodium salt

Key facts

CAS number

6358-69-6

Form

Solid

form

Molecular weight

524.4 Da

Molecular formula

C₁₆H₇Na₃O₁₀S₃

PubChem

61388

Nature

Synthetic

Solubility

Soluble in water

Biochemical name

Pyranine

Biological description

Fluorescent pH indicator with fluorescent emission change in the physiological pH range. Used as a dye in optical sensor applications. Highly water-soluble and membrane-impermeant with a pKa of 7.3 in aqueous buffers.

Canonical smiles

C1=CC2=C3C(=C(C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])C=CC4=C(C=C(C1=C43)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]

InChi

InChI=1S/C16H10O10S3.3Na/c17-11-5-12(27(18,19)20)8-3-4-10-14(29(24,25)26)6-13(28(21,22)23)9-2-1-7(11)15(8)16(9)10;;;/h1-6,17H,(H,18,19,20)(H,21,22,23)(H,24,25,26);;;/q;3*+1/p-3

InChiKey

KXXXUIKPSVVSAW-UHFFFAOYSA-K

IUPAC Name

trisodium;8-hydroxypyrene-1,3,6-trisulfonate

Excitation/Emission

Ex: 460nm, Em: 510nm