penicillanicadj.
/ˌpɛnᵻsɪˈlanɪk/, U.S. /ˈˌpɛnəsəˈlænɪk/ Chemistry.
penicillanic acid n. a crystalline compound, C8H11NO2S, whose bicyclic molecular structure is the nucleus of the penicillins and consists of a β-lactam ring fused to a molecule of 5,5-dimethylthiazolidine-4-carboxylic acid.
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the world > matter > chemistry > organic chemistry > organic acids > [noun] > carboxylic acids > miscellaneous others
urobenzoic acid1836
adipic acid1838
azelaic acid1838
isethionic acid1838
rutinic acid1845
rutic acid1848
glyoxylic acid1856
malonic acid1859
piperic acid1863
butalanine1865
methacrylic acid1865
barbituric acid1866
pichuric acid1866
carboxylic acid1868
gluconic acid1871
xylic acid1872
xylidic acid1872
aconic acid1873
formobenzoic1873
nicotinic acid1873
hydracrylic acid1877
undecylenic acid1879
isonicotinic acid1883
isatoic acid1885
linolenic acid1887
hendecenoic acid1889
heptenoic acid1889
mannonic acid1890
phenolcarboxylic acid1893
naphthenic acid1894
aldonic acid1904
naphthaleneacetic acid1917
heptanoic acid1928
hexuronic acid1928
pantothenic acid1933
neuraminic acid1942
pantoic acid1945
penicillanic acid1953
mevalonic acid1957
retinoic acid1960
isobutyric acid-
1953 J. C. Sheehan et al. in Jrnl. Amer. Chem. Soc. 75 3293 By a cyclization procedure we have synthesized a β-lactamthiazolidine (VI)... We have chosen to call this compound methyl phthalimidopenicillanate. [Note] As a convenience in naming VI and similar analogs of the penicillins we suggest the terms ‘penam’ and ‘penicillanic acid’ for the following ring system and substituted ring system.
1969 Adv. Appl. Microbiol. 11 26 (heading) Antistaphylococcal activity of 6-substituted penicillanic acid derivatives.
1990 Protein Engin. 4 81/2 The penicillins formed a quasi continuous series in which the side chain was varied from penicillanic acid and 6-aminopenicillanic acid..to the classical penicillins.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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adj.1953