pentanoicadj.
/ˌpɛntəˈnəʊɪk/, U.S. /ˌpɛn(t)əˈnoʊɪk/ Chemistry.
pentanoic acid n. any saturated fatty acid of the formula C4H9COOH, of which four isomers exist; spec. (also n-pentanoic acid) the straight-chain primary acid, CH3(CH2)3COOH, an oily liquid (also called valeric acid) present in various plant oils.
ΚΠ
1901 Jrnl. Amer. Chem. Soc. 23 393 Isocaproic Acid,..(methyl-4-pentanoic acid).]
1913 Jrnl. Amer. Chem. Soc. 35 1273 (table) n-Pentanoic [acid].
1927 Jrnl. Amer. Chem. Soc. 49 1828 (heading) Some bromine derivatives of pentanoic and hexanoic acids.
1937 F. C. Whitmore Org. Chem. i. 298 n-Valeric acid, n-valerianic acid, pentanoic acid, n-propylacetic acid, CH3CH2CH2CH2CO2H, is made by the oxidation of n-amyl alcohol.
1965 Nomencl. Org. Chem. (I.U.P.A.C.) C. 112 Saturated aliphatic monocarboxylic acids..Pentanoic. [Note] The trivial name is normally preferred.
1990 Y. Doi Microbial Polyesters ii. 19 The addition of 4-hydroxybutyric acid in the pentanoic acid solution resulted in the formation of terpolyester with 3HB, 4HB, and 3HV units.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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