Carbohydrates magnesium chloride

The first example of an intramolecular aldol cyclopenta-annulation on a carbohydrate system has been described by Jenkins and co-worirers/ Epoxide 26 was converted to 27 ia axial epoxide opening with allyl magnesium chloride and subsequent diastereoselective enolate methylation, Wacker oxidation of 27 then providing diketone 28. Treatment with potassium r-butoxide led to cyclopenta-annulation and dehydration of the intermediate aldol product gave 29, confirmed by X-ray structure analysis. 

Application of Job s principle00 to aqueous solutions of sucrose and alkaline-earth metal salts (magnesium sulfate, calcium acetate, and barium chloride), whose combined concentration was 1 M, gave curves of Aa against concentration that exhibited two maxima, one at 0.5 M sucrose and the other at 0.66 M sucrose. These observations suggest that both 1 1 and 2 1 carbohydrate-salt adducts can exist in solution. 

The United States Food and Drug Administration issued a safety alert in 1994 regarding the potentially life-threatening formation of precipitates in parenteral nutrition admixtures (148). They had received reports of two deaths and at least two cases of respiratory distress during intravenous infusion of a three-in-one parenteral nutrition mixture (amino acids, carbohydrates, lipids). The mixture contained 10% FreAmine III (amino acids -I- magnesium acetate -I- phosphoric acid -I- potassium chloride -I- sodium acetate -I- sodium chloride), dextrose, calcium gluconate, potassium phosphate, other minerals, and a lipid emulsion. The solution may have contained a precipitate of calcium phosphate. Autopsies revealed diffuse microvascular pulmonary emboli containing calcium phosphate. 

In contrast to calculus, dental enamel contains over 96% w/w inorganic mineral [50]. The main constituent is a single calcium phosphate phase, HAP, the structure of which contains minor impurities such as magnesium, sodium, carbonate and chloride [50]. Dental caries is a disease of bacterial origin. Certain plaque bacteria can ferment sugars and other carbohydrates from the diet to produce lactic acid and other short chain organic acids [51], If the concentration of acid depresses the pH adjacent to the tooth surface below about pH 5.5, then the enamel dissolves. 

Bacterial cells are nuclear structures bounded by a cell wall. Although as with other cellular structures the moisture content is high (75-90%) other constituents may include sulphate, silica, sodium, phosphorus, potassium, magnesium, calcium, chloride, carbohydrates, fats and lipids. 

In the condition of sanitary-chemical laboratory and the bacteriologic one of National Scientific and Practical Center of Preventive Medicine and Municipal Center of Preventive Medicine Chisinau after the standardized methods there was accomplished the sample analysis of water from aqueducts, the well from Chisinau and suburbs as well. There were determined the following indicators turbidity, ammonia, nitrite, nitrate, total dissolved solid, concentration of fluoride, hardness, content of calcium, magnesium, K+Na, chloride, sulfate, carbohydrate, iron, NTG, coliform bacterium. 

Electrolytes which do not afford ionic complexes with common hexitols and reducing sugars are aqueous solutions of lead acetate, copper sulfate, zinc sulfate, ferrous ammonium sulfate, calcium chloride, potassium dichromate, ferric chloride (pH 3), aluminum sulfate, magnesium sulfate, sodium sulfate, potassium antimonyl tartrate, sodium arsenate or arsenic acid, sodium phosphate, and hydrochloric acid. It is not certain whether sodium aluminate (in 0.1 N sodium hydroxide) affords ionic complexes with carbohydrates, as aqueous alkali, alone, permits their migration during electrophoresis. 

Hydrogen chloride magnesium sulfate Carbohydrate mercaptals... 

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