Partition Coefficients and Surface Areas of Some Alkylbenzenes

S. H. Yalkowsky, S. C. Valvani

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


The experimentally measured log P values (logarithms of partition coefficients) of a number of alkylbenzenes are shown to be quantitatively related to the hydrocarbon surface area HSA of the molecule by π = 0.0275 × HSA - 0.863 (correlation coefficient = 0.996, standard deviation = 0.071). The use of surface area as a correlating parameter eliminates the need for correction factors to account for branching, cyclization, ring fusion, and “backfolding”. Furthermore, surface area calculations provide a conceptual basis for understanding how conformation can effect partitioning.

Original languageEnglish (US)
Pages (from-to)727-728
Number of pages2
JournalJournal of Medicinal Chemistry
Issue number5
StatePublished - May 1 1976

ASJC Scopus subject areas

  • Molecular Medicine
  • Drug Discovery


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