[Development of methods for the chromatographic analysis of Hevizos].
Normal phase HPLC and OPTLC methods are described for the analysis of Hevizos (5-isopropyl-2'-beta-deoxyuridine) and it's impurities. The eluent is 50% water saturated ethyl-acetate to which 0.5-1.5% methanol is added depending on the silica used. The water content is important as it practically eliminates tailing. The methods can also be used for the determination of 5-isopropyl-2'-beta-deoxyuridine and it's impurities in Hevizos ointment after a simple extraction procedure. The OPTLC method uses a CHROMPRES 10 apparatus, aluminum backed HPTLC plates and the same eluent-system as the HPLC method. The reproducibility of the HPLC method (rel. st. dev.) is 0.8%, the correlation coefficient is > 0.999 for the main component, while the impurities can be determined at the 0.1% level with a reproducibility of 20%, and a correlation coefficient of > 0.997. The reproducibility of the OPTLC method (rel. st. dev.) is 4% for the main component, while for the impurities at the 0.5% level the reproducibility is 20%.
Vajda
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MTA Központi Kémiai Kutató Intézete, Budapest.
Csárnyi
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A
Valkó
K
K
Forgácsné
T E
TE
D000998:Antiviral Agents / Q000032:analysis* / Q000302:isolation & purification; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003857:Deoxyuridine / Q000031:analogs & derivatives* / Q000032:analysis / Q000302:isolation & purification; D007202:Indicators and Reagents
D000998:Antiviral Agents; D007202:Indicators and Reagents; C048773:5-isopropyl-2'-deoxyuridine; D003857:Deoxyuridine