# Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate

CAS: 83329-89-9
PubChem CID: 50851128
InChIKey: BDKYEEMJFNONPU-UHFFFAOYSA-M
Wikidata: Q81982140
Molecular formula: C₁₀ClF₂₀KO₄S
Molar mass: 670.69 g/mol
IUPAC: potassium 2-(8-chloro-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluorooctoxy)-1,1,2,2-tetrafluoroethanesulfonate
SMILES: C(C(C(C(C(F)(F)Cl)(F)F)(F)F)(F)F)(C(C(C(OC(C(F)(F)S(=O)(=O)[O-])(F)F)(F)F)(F)F)(F)F)(F)F.[K+]
InChI: InChI=1S/C10HClF20O4S.K/c11-7(24,25)5(20,21)3(16,17)1(12,13)2(14,15)4(18,19)6(22,23)8(26,27)35-9(28,29)10(30,31)36(32,33)34;/h(H,32,33,34);/q;+1/p-1
PSA: 74.8 A^2
Hydrogen bond donors: 0
Hydrogen bond acceptors: 24
Rotatable bonds: 11
Heavy atoms: 37
3D structure: 37 atoms, 36 bonds

## About the compound

Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate is a chemical compound registered under CAS number 83329-89-9. Molecular formula: C₁₀ClF₂₀KO₄S. Molar mass: 670.69 g/mol. The full systematic IUPAC name is: potassium 2-(8-chloro-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluorooctoxy)-1,1,2,2-tetrafluoroethanesulfonate. The molecule contains 37 atoms connected by 36 chemical bonds. 
Chemical data comes from the PubChem (NIH), ChEMBL (EBI) and NIST WebBook databases. GHS statement translations comply with the CLP Regulation (EC 1272/2008). Interactive 3D model and 2D skeleton available at: https://molgod.org/molecule/83329-89-9/


## Synonyms

  - 83329-89-9
  - Potassium 11-chloroeicosafluoro-3-oxaundecane-1-sulfonate
  - RefChem:373684
  - DTXCID701079633
  - SCHEMBL25287986
  - MSK157675K
  - PD192653
  - NS00117956
  - 8:2 CHLORINATED POLYFLUORINATED ETHER SULFONATE
  - 11-Chloro-3-oxa-perfluoroundecanesulfonic acid potassium salt
  - 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid potassium
  - 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid potassium 50 microg/mL in Methanol:Water

## Data sources

  - PubChem CID 50851128: https://pubchem.ncbi.nlm.nih.gov/compound/50851128
  - Wikidata: https://www.wikidata.org/wiki/Q81982140
  - NIST WebBook: https://webbook.nist.gov/cgi/cbook.cgi?ID=83329-89-9
  - ChEMBL: https://www.ebi.ac.uk/chembl/g/#search_results/all/query=83329-89-9

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Last updated: 2026-10-17
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