01 n. A lactone (C8H6O2) obtained as a white crystalline substance by reduction of phthalyl chloride and other processes; hence, by extension, an…
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1.
A lactone (C8H6O2) obtained as a white crystalline substance by reduction of phthalyl chloride and other processes; hence, by extension, any one of the series of which phthalide proper is the type.(Chem.)
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2.
A fungicide (C8H2Cl4O2) which is a tetrachloro derivative of phthalide{1} proper; in this sense, the spelling fthalide is also used. It has CAS Registry Number 27355-22-2.
Syn.
4,5,6,7-tetrachloro-1(3H)-isobenzofuranone.