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Cited by 1,020

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A Bioavailability Score

Martin, Yvonne C.·2005·Journal of Medicinal Chemistry

Abstract

Responding to a demonstrated need for scientists to forecast the permeability and bioavailability (F) properties of compounds before their purchase, synthesis, or advanced testing, we have developed a score that assigns the probability that a compound will have F > 10% in the rat. Neither the rule-of-five, log P, log D, nor the combination of the number of rotatable bonds and polar surface area successfully categorized compounds. Instead, different properties govern the bioavailability of compounds depending on their predominant charge at biological pH. The fraction of anions with >10% F falls from 85% if the polar surface area (PSA) is < or = 75 A(2), to 56% if 75 < PSA < 150 A(2), to 11% if PSA is > or = 150 A(2). On the other hand, whereas 55% of the neutral, zwitterionic, or cationic compounds that pass the rule-of-five have >10% F, only 17% of those that fail have > 10% F. This same categorization distinguishes compounds that are poorly permeable from those that are permeable in Caco-2 cells. Further validation is provided with human bioavailability values from the literature.

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Metadata

Authors
Martin, Y. C.
Venue
Journal of Medicinal Chemistry
Published
2005-04-05
Volume
48
Issue
9
Pages
3164-3170
ISSN
  • 0022-2623 (ISSN-L)
  • 1520-4804
OpenAlex
W2039478311
Cited by
1,020
References
34
FWCI
18.20
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A Bioavailability Score. https://app.cochat.ai/papers/10.1021/jm0492002
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Martin, Y. C. (2005). A Bioavailability Score. Journal of Medicinal Chemistry. https://doi.org/10.1021/jm0492002

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