منابع مشابه
Stability of colistimethate sodium in aqueous solution.
Colistimethate sodium, increasingly used to treat multidrug-resistant Gram-negative infections, spontaneously hydrolyzes to form colistin A (polymyxin E1) and B (polymyxin E2/B) when mixed with water. High levels of these active breakdown products at the time of administration have been associated with nephrotoxicity and even death. In this study, reconstituted colistimethate sodium was shown t...
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Poly urea-formaldehyde was synthesized simply and rapidly from urea and formaldehyde by condensation polymerization and studied for the sorption of trace acid blue from aqueous solution. The optimum pH value for sorption of the acid blue was 4. Experimental results showed that the sorption capacity of poly urea-formaldehyde for acid blue was determined. The synthetic polymer can be reused for 5...
متن کاملSorption Study of Acid Blue in Aqueous Solution by Synthetic Poly Urea-Formaldehyde
Poly urea-formaldehyde was synthesized simply and rapidly from urea and formaldehyde by condensation polymerization and studied for the sorption of trace acid blue from aqueous solution. The optimum pH value for sorption of the acid blue was 4. Experimental results showed that the sorption capacity of poly urea-formaldehyde for acid blue was determined. The synthetic polymer can be reused for 5...
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Omeprazole (OME) is a proto type anti-secretary agent. This compound is very unstable, especially in acidic aqueous solutions. A stability indicating HPLC assay has been developed in order to investigate the effect of different factors on the stability of omeprazole. These factors included the pH with the tested values ranging from 6-10 and the temperature by monitoring the drug stability at 25...
متن کاملPenicillin. III. The Stability of Penicillin in Aqueous Solution.
The instability of penicillin in aqueous solution has been known since the time of its discovery by Fleming (1929). However, beyond the general recognition that excess acidity or alkalinity caused rapid inactivation, little work has been reported on the inactivation of penicillin over a wide pH range and at different temperatures. The maximum stability range of a barium salt of penicillin teste...
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ژورنال
عنوان ژورنال: Eisei kagaku
سال: 1977
ISSN: 0013-273X
DOI: 10.1248/jhs1956.23.393