lactonicadj.
/lakˈtɒnɪk/ Chemistry.
1. lactonic acid: [translating German lactonsäure (Hlasiwetz & Habermann 1870, in Ann. d. Chem. u. Pharm. CLV. 139), < lact-ose lactose n. + -on -one suffix: see -ic suffix.]
a. = galactonic acid n.
ΚΠ
1871 Jrnl. Chem. Soc. 24 547 Lactonic acid, which, according to Fittig's views, must also be monobasic..is found to be really a bibasic acid.
1886 E. F. Smith tr. V. von Richter Chem. Carbon Compounds 378 Lactonic acid, C6H10O6, is produced from milk sugar and galactose by the action of bromine water and silver oxide. It is a deliquescent, crystalline mass, melting at 100°.
b. = lactobionic acid n. at lacto- comb. form 2.
ΚΠ
1957 Chem. Abstr. 51 Subject Index 1358/1 Lactonic acid, calcium salt, calcium gluconate solubilization with.
1964 N. G. Clark Mod. Org. Chem. xvi. 328 Hydrolysis of lactonic acid yields galactose and gluconic acid.
2. [ < lacton- (in lactone n.) + -ic suffix.] Containing the characteristic ring structure of lactones (sense 2).
ΚΠ
1885 Jrnl. Chem. Soc. 48 963 (heading) Conversion of lactonic acids into lactones.
1888 Jrnl. Chem. Soc. 54 251 When the lactonic acids, CHXCH(COOH)O·CO·CH2, obtained by the union of aldehydes with succinic acid, are boiled..the greater portion decomposes yielding..the monobasic unsaturated acids..together with the lactones.
1924 Jrnl. Chem. Soc. 126 i. 45 When it [sc. isocampholactone] is oxidised by means of nitric acid, there are formed nitro~isocampholactone and a lactonic acid.
1968 Jrnl. Agric. & Food Chem. 16 252 (heading) Lactonic compounds of apricot.
1970 Acta Chem. Scand. XXIV. 3428/1 (heading) Investigation of lactonic acids in the latex of Euphorbium canariensis L.
1971 Agric. & Biol. Chem. (Tokyo) 35 27 (heading) Studies on the new seventeen member lactonic antibiotics.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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adj.1871