Results 251 to 260 of about 8,058,686 (308)
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Biochemical Pharmacology, 1962
Abstract Major metabolic pathways for l -thyroxine and l -3,5,3'-triiodothyronine involve removal of an iodine atom from the benzene ring with the side chain and thus inactivation of these hormones. Conjugates of the products 3,3',5'-triiodothyronine and 3,3'-diiodothyronine are excreted in the bile of dogs with livers but accumulate in the blood ...
E V, FLOCK, J L, BOLLMAN, G H, STOBIE
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Abstract Major metabolic pathways for l -thyroxine and l -3,5,3'-triiodothyronine involve removal of an iodine atom from the benzene ring with the side chain and thus inactivation of these hormones. Conjugates of the products 3,3',5'-triiodothyronine and 3,3'-diiodothyronine are excreted in the bile of dogs with livers but accumulate in the blood ...
E V, FLOCK, J L, BOLLMAN, G H, STOBIE
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Fluid Phase Equilibria, 2014
Abstract Isothermal vapour–liquid equilibrium data (VLE) were measured for propionic acid + caproic acid, isobutyric acid + caproic acid, valeric acid + caproic acid, and caproic acid + enanthoic acid at several temperatures. A refined glass recirculating still with a packed equilibrium chamber and a vacuum-insulated, centrally located Cottrell pump ...
Alex Hlengwere +4 more
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Abstract Isothermal vapour–liquid equilibrium data (VLE) were measured for propionic acid + caproic acid, isobutyric acid + caproic acid, valeric acid + caproic acid, and caproic acid + enanthoic acid at several temperatures. A refined glass recirculating still with a packed equilibrium chamber and a vacuum-insulated, centrally located Cottrell pump ...
Alex Hlengwere +4 more
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Journal of Chemical & Engineering Data, 2010
Solid−liquid equilibria for three organic binary mixtures of hexanedioic acid (1) + benzoic acid (2) (eutectic temperature TE = 378.17 K, eutectic composition x1E = 0.249), benzoic acid (1) + pentanedioic acid (2) (TE = 343.50 K, x1E = 0.402), and hexanedioic acid (1) + pentanedioic acid (2) (TE = 355.87 K, x1E = 0.205) were measured using differential
Tzu-Chi Wang, Tzu-Yu Lai, Yan-Ping Chen
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Solid−liquid equilibria for three organic binary mixtures of hexanedioic acid (1) + benzoic acid (2) (eutectic temperature TE = 378.17 K, eutectic composition x1E = 0.249), benzoic acid (1) + pentanedioic acid (2) (TE = 343.50 K, x1E = 0.402), and hexanedioic acid (1) + pentanedioic acid (2) (TE = 355.87 K, x1E = 0.205) were measured using differential
Tzu-Chi Wang, Tzu-Yu Lai, Yan-Ping Chen
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The acidities of ascorbic and sialic acids
Journal of Chemical Education, 1970This note concerning the pKa's of ascorbic and sialic acids id presented since the compounds are of general interest to organic chemists and carbohydrate chemists as well as biochemists.
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Journal of Chemical & Engineering Data, 2004
Vapor pressure data were measured for the following carboxylic acids: propionic, butyric, isobutyric, valeric, isovaleric, hexanoic, and heptanoic acids. The pressure ranged between ∼5 kPa and atmospheric pressure (at sea level), and the corresponding temperatures were between 85 and 180 °C, depending on the acid being measured.
Scott L. Clifford +2 more
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Vapor pressure data were measured for the following carboxylic acids: propionic, butyric, isobutyric, valeric, isovaleric, hexanoic, and heptanoic acids. The pressure ranged between ∼5 kPa and atmospheric pressure (at sea level), and the corresponding temperatures were between 85 and 180 °C, depending on the acid being measured.
Scott L. Clifford +2 more
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The Second Acidic Constant of Salicylic Acid
Annali di Chimica, 2005AbstractThe second dissociation constant of salicylic acid (H2L) has been determined, at 25 °C, in NaCl ionic media by UV spectrophotometric measurements. The investigated ionic strength values were 0.16, 0.25, 0.50, 1.0, 2.0 and 3.0 M. The protolysis constants calculated at the different ionic strengths yielded, with the Specific Interaction Theory ...
PORTO R, DE TOMMASO G, FURIA, Emilia
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EQUILIBRIUM ACIDITIES OF CARBON ACIDS
Pure and Applied Chemistry, 1977Abstract
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Acid Catalysis by Heteropoly Acids
ChemInform, 2003The achievements in the field of acid catalysis by heteropoly acids having different structures HxPW11LO40 (L = ZrIV, TiIV, ThIV), HxZW12O40 (Z = SiIV, PV, BIII, CoIII, GeIV), H21B3W39O132, H6P2W18O62, H6P2W21O71, H6As2W21O69 are reviewed. The data on the acidity of HPAs are generalized. The rules of homogeneous and heterogeneous acid catalysis by HPAs
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Acids: Natural Acids and Acidulants
2003Acids, or acidulants as they are also called, are commonly used in food processing as flavor intensifiers, preservatives, buffers, meat-curing agents, viscosity modifiers, and leavening agents. This article discusses the functions that acidulants have in food systems and reviews the more commonly used food acidulants.
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