[Spectrophotometric determination of rifampicin S in the presence of rifampicin O].
The limits of the use of the methods of direct photometric and differential spectrophotometric determination of rifamycin S containing rifamycin O as an admixture were discussed. The method of direct photometry did not provide determination of rifamycin S in the presence of rifamycin O since instability of the latter under the analysis conditions. A possibility of using the differential-spectrophotometric method for determination of rifamycin S in the presence of not more than 5 per cent of rifamycin O was shown.
D002021:Buffers; D006863:Hydrogen-Ion Concentration; D010783:Photometry; D012293:Rifampin / Q000031:analogs & derivatives / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods*
D002021:Buffers; D012293:Rifampin
K voprosu o spektrofotometricheskom opredelenii rifampitsina S v prisutstvii rifampitsina O