| PA | panic attack; pantothenic acid; paralysis agitans; paranoia; passive aggressive; pathology; patient'... |
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| PAE | Phthalic acid esters |
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| PA | Phthalic anhydride |
| PA | phthalic acid |
| phthalic anhydrides | Phthalic acid anhydrides. Can be substituted on any carbon atom. Used extensively in industry and as a reagent in the acylation of amino- and hydroxyl groups. (12 Dec 1998) |
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| anhydrides | Chemical compounds derived from a substance, especially an acid, by the abstraction of a molecule of water. The anhydrides of bases are oxides; those of alcohols are ethers. (12 Dec 1998) |
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| maleic anhydrides | Cis-butenedioic anhydride. Used in copolymerization reactions, in the diels-alder(diene)synthesis, in the preparation of resins, pharmaceuticals and agricultural chemicals. It is a powerful irritant and causes burns. (12 Dec 1998) |
| resorcinol phthalic anhydride | <chemical> Fluorophore commonly used in microscopy. Fluorescein di acetate can be used as a vital stain or can be conjugated to proteins (particularly antibodies) using isothiocyanate. Excitation is at 365nm and the emitted light is green yellow (450-490nm). The emission spectrum is pH sensitive and fluorescein can therefore be used to measure pH in intracellular compartments. (18 Nov 1997) |
| citraconic anhydrides | Methylmaleic anhydrides. (12 Dec 1998) |
| phthalic | <chemistry> Pertaining to, or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances. <chemistry> Phthalic acid, a white crystalline substance, C6H4.(CO2H)2, analogous to benzoic acid, and employed in the brilliant dyestuffs called the phthaleins. Origin: Naphthalene + -ic. Source: Websters Dictionary (01 Mar 1998) |
| phthalic acid | O-Benzenedicarboxylic acid;c6H4(COOH)2. (05 Mar 2000) |
| phthalic acids | A group of compounds that has the general structure of a dicarboxylic acid-substituted benzene ring. The ortho-isomer is used in dye manufacture. (12 Dec 1998) |
| succinic anhydrides | A subclass of anhydrides with the general structure of dihydrofurandione. They can be substituted on any carbon atom. They modify and inhibit proteins and enzymes and are used in the acylation of amino- and hydroxyl groups. (12 Dec 1998) |
Synonyms : Anhydrides, Phthalic
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