Anticoccidial Activity of Lasalocid (X-537A) in Chicks
نویسندگان
چکیده
منابع مشابه
Monomeric forms of the acid ionophore lasalocid A (X-537A) from polar solvents.
X-ray structural analyses have been carried out on the free acid of lasalocid A (X-537A) and on the sodium salt, both crystallized from methanol solution. In each case the structure is monomeric with one molecule of methanol complexing to the free acid and to the salt.
متن کاملHydroxyl deformation frequencies as a probe of hydrogen bonding in lasalocid A (X-537A) and its sodium complex.
The hydroxyl deformation frequencies (900-1 500 cm-l) of lasalocid A, its sodium complex, and their deuterated derivatives were studied with Raman spectroscopy. The secondary and tertiary hydroxyl groups of lasalocid A give rise to spectral lines near 1425, 1303, 1172, and 738 cm-’, typical of hydrogen-bonded hydroxyl groups. In the lasalocid A-sodium complex, these are replaced by peaks at 138...
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The calcium binding characteristics of antibiotic X-537A (lasalocid-A) in a lipophilic solvent, acetonitrile (CH3CN), have been studied using circular dichroism (CD) spectroscopy. The analysis of the data indicated that in this medium polar solvent, X-537A forms predominantly the charged complexes of stoichiometries 2:1 and 1:1, the relative amounts of the two being dependent on [Ca2+]. The con...
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In the course of our studies concerning the derivatization of the polyether ionophore nigericin1'2) we observed a dependence of the antibacterial activity on the counter ion at C-l,3) which prompted us to investigate if related effects can also be found for other polyethers and indications. Salinomycin (1), for example is another important polyether4'5) which is produced in combination with rel...
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heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1974
ISSN: 0032-5791
DOI: 10.3382/ps.0531448