Glucose-6-phosphoric acid

Glucose-6-phosphate. D-Gfucose 6-<dihydrogen phosphate) glucose-6-phosphoric acid Robison ester. C4-HijOjP mol wt 260.14. C 27-70%, H 5.04%, O 55.35%, P... 

More complex phosphates may show considerable variations in their hydrolysis behaviour. Glucose-6-phosphoric acid (5.344b) is very stable to acidic conditions and is only slowly hydrolysed by mineral acid. Boiling N HCl at 100°C takes several days to effect complete hydrolysis. Glucose-1-phosphoric acid (5.344a), on the other hand, is completely hydrolysed in about 10 min under the same conditions. 

Phosphoenolpyruvic acid is another compound (11.6) which releases a comparatively large amount of energy on hydrolysis. Glucose-6-phosphate (glucose-6-phosphoric acid) (11.7) and... 

Glucose-phosphoric acid A 2% glucose solution in phosphoric acid/water/ethanol/ra-butanol (1 4 3 3) is sprayed on the plate followed by heating (115°C, 10 min) to yield a variety of spots. 

Alcohol to acetic acid Aldehydes to alcohols (e.g., acetaldehyde to ethyl alcohol) Starch to glucose Hexose phosphate from hexose and phosphoric acid... 

In long-wavelength UV light (2 = 365 nm) carbohydrates, e.g. glucose, fructose and lactose, yield pale blue fluorescent derivatives on a weakly fluorescent background. In situ quantitation can be performed at = 365 nm and 2fi = 546 nm (monochromatic filter M 546) [19]. Further differentiation can be achieved by spraying afterwards with p-anisidine-phosphoric acid reagent [8]. 

Of special biochemical importance are the esters of monosaccharides with phosphoric acid. They are generally termed phosphates (e.g. glucose 6-phosphate). In biochemical use, the term phosphate indicates the phosphate residue regardless of the state of ionization or the counter ions. 

C13-0108. The first step of glucose metabolism is an enzyme-catalyzed condensation reaction between phosphoric acid and the CH2 OH hydroxyl on glucose. Draw the structure of this glucose phosphate. 

Esterification. The hydroxyl groups of monosaccharides can form esters with acids. In metabolism, phosphoric acid esters such as glucose 6-phosphate and glucose 1-phosphate (6) are particularly important. 

Silica and bonded phases decompose also in contact with aqueous solu lion of pH < 2. Therefore it is not advisable to use bulTci s Imviiig pH css than 2. Most commonly phosphoric acid buflTers are used in this pH range. Perhaps buffer made with glucose-l-phosphate (pJC, >= 1.1) and a bulky cation could make possible the bng-term use of columns with eluents of pH <2. 

EMETROL is an oral solution containing balanced amounts of dextrose (glucose) and levulose (fructose) and phosphoric acid with controlled hydrogen ion concentration. Available in original lemon-mint or cherry flavor. Each 5-mI, teaspoonful contains dextrose (glucose), 1.87 g levulose... 

Glucose, Fructose, and Phosphoric Acid Antiemetic Solution... 

FIGURE 1-10 The organic compounds from which most cellular materials are constructed the ABCs of biochemistry. Shown here are (a) six of the 20 amino acids from which all proteins are built (the side chains are shaded pink) (b) the five nitrogenous bases, two five-carbon sugars, and phosphoric acid from which all nucleic acids are built (c) five components of membrane lipids and (d) o-glucose, the parent sugar from which most carbohydrates are derived. Note that phosphoric acid is a component of both nucleic acids and membrane lipids. 

Some phosphoric acid derivatives of 2-desoxy-D-ribose have been obtained by enzymic methods of preparation. A reaction analogous to the phosphorolysis of glycogen to D-glucose 1-phosphate241 has been effected with either hypoxanthine- or guanine-D-riboside, both of which could be split by enzymic phosphorolysis with the formation of D-ribose 1-phosphate.242 The successful conclusion of these experiments prompted similar investigations with desoxyribonucleosides. 

Furancarboxylic acid (0) Glucose-1-phosphate (0) Glycerol-l-phosphoric acid (—1) Glycerol-2-phosphoric acid (0)... 

Glucose Sulfuric acid Phosphoric acid Triethanolamine Tfimethylamine, diethylether, isopentane (2 5 5)... 

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