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・ Isophrictis meridionella
・ Isophrictis microlina
・ Isophrictis modesta
・ Isophrictis occidentalis
・ Isophrictis oudianella
・ Isophrictis pallidastrigella
・ Isophrictis pallidella
・ Isophrictis pennella
・ Isophrictis robinella
・ Isophrictis rudbeckiella
・ Isophrictis sabulella
・ Isophrictis similiella
・ Isophrictis striatella
・ Isophrictis tophella
・ Isophrictis trimaculella
Isophthalic acid
・ Isophya
・ Isophya harzi
・ Isophyllia sinuosa
・ Isophysis
・ Isopimara-7,15-diene synthase
・ Isopimaric acid
・ Isopimpinellin
・ Isopiperitenol dehydrogenase
・ Isopiperitenone Delta-isomerase
・ Isoplanetic patch
・ Isoplectron
・ Isoplenodia
・ Isoplenodia arabukoensis
・ Isoplenodia arrogans


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Isophthalic acid : ウィキペディア英語版
Isophthalic acid

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Isophthalic acid is an organic compound with the formula C6H4(CO2H)2. This colourless solid is an isomer of phthalic acid and terephthalic acid.
==Preparation==
Isophthalic acid is produced on the billion kilogram per year scale by oxidizing meta-xylene using oxygen.〔 The process employs a cobalt-manganese catalyst. In the laboratory, chromic acid can be used as the oxidant. It also arises by fusing potassium meta-sulphobenzoate, or meta-brombenzoate with potassium formate (terephthalic acid is also formed in the last case).
The barium salt (as its hexahydrate) is very soluble (a distinction between phthalic and terephthalic acids). Uvitic acid, 5-methylisophthalic acid, is obtained by oxidizing mesitylene or by condensing pyroracemic acid with baryta water.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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