Sodium tetradecyl sulfate

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Sodium tetradecyl sulfate
Sodium 7-ethyl-2-methyl-4-undecanyl sulfate.svg
Systematic (IUPAC) name
Sodium 7-ethyl-2-methyl-4-undecanyl sulfate
Clinical data
AHFS/ Consumer Drug Information
Legal status
  • Prescription only medicine
Routes of
Intravenous injection
ATC code C05BB04
PubChem CID 14492
ChemSpider 8440 N
Synonyms 7-Ethyl-2-methyl-4-hendecanol sulfate sodium salt
Chemical data
Formula C14H29NaO4S
Molar mass 316.43243 g/mol
 NYesY (what is this?)  (verify)

Sodium tetradecyl sulfate (STS) is a commonly used synonym for 7-ethyl-2-methyl-4-undecanyl sulfate sodium salt[1] which is anionic surfactant that is the active component of the sclerosant drug Sotradecol. It is commonly used in the treatment of varicose and spider veins of the leg, during the procedure of sclerotherapy. Being a detergent, its action is on the lipid molecules in the cells of the vein wall, causing inflammatory destruction of the internal lining of the vein and thrombus formation eventually leading to sclerosis of the vein. It is used in concentrations ranging from 0.1% to 3% for this purpose. In the UK, Ireland, Italy, Australia, New Zealand and South Africa, it is sold under the trade-name Fibro-Vein in concentrations of 0.2%, 0.5%, 1.0%, and 3%.[2]