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파라퀴논 유도체와의 전하이동착물 형성을 이용한 에녹사신 정량
이지연(J. Y. Lee),김동오(D. O. Kim),남수자(S. J. Nam),정문모(M. M. Jung),허문회(M. H. Hur),안문규(M. K. Ahn) 대한약학회 1999 약학회지 Vol.43 No.4
Enoxacin[1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-1,8-naphthyridine-3-carboxylic acid, ENX is a new quinolone antibacterial agent. The method is based on the highly colored charge-transfer complex formation of this drug as a pi-electron donor with 7,7,8,8-tetracyanoquinodimethane(TCNQ) or chloranil(CL) as pi-acceptors. The colored products were measured spectrophotometrically at 842nm and 552nm for TCNQ and CL, respectively. The different experimental conditions are optimized. The linearities for TCNQ and CL were 1.6mcg/mL~32mcg/mL and 6.4mcg/mL~160mcg/mL, respectively and colors were produced in non-aqueous media. This report describes a simple and rapid method for the analysis of enoxacin.
PVC 액체막 전극을 이용한 Norfloxacin의 정량
김동오(D O Kim),남수자(S J Nam),문현숙(H S Moon),정문모(M M Jung),허문희(M H Hur),김대병(D B Kim),안문규(M K Ahn) 대한약학회 2000 약학회지 Vol.44 No.5
The present method is to describe a potentiometric norfloxacin electrode system characterized by a membrane, based on the use of norfloxacin (NF) complex with ion-association reagents. These complexes were dissolved in DMSO, DMF, acetonitrile or acetone and dispersed in plasticized poly(vinyl chloride) matrix. The picric acid complex electrode exhibited near-Nernstian response for NF in acetate buffer solution (pH 4.0) with a slope of 53.03mV/decade. And linear response over the range of 10-5 to 10-3M solution of NF. The ingredients in tablet, capsule and biological important organic acids were not interfere.
허문회,안문규 경성대학교 2000 論文集 Vol.21 No.2
The potential response of mefenamic acid selective electrode using Cu(II)-neocuproine- mefenamic acid ternary complex as a counter ion was examined. 2-Nitrophenyl octyl ether(NPOE), benzyl nitrophenyl ether(BNPE) and fluorophenyl nitrophenyl ether(FPNPE), dioctyl sebacate(DOS), dioctyl phthalate(DOP), trioctyl phthalate(TOP) and tricresyl phthalate (TCP) were used as plasticizer. BNPE plastized membrane were more selective and sensitive than others. That membrane electrode showed the slope of -59.2 mV/dec., the linear range of 10-2 M ~ 5x10-5 M and correlation coefficient of 0.997. Optimal working pH range was 8.0 ∼ 10.0. The result obtained with direct potentiometry showed a good recovery of 97.5% with relative standard deviation of 2.6%. This proposed method could be applied for the determination of mefenamic acid in pharmaceutical preparations.