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QUANTIFICATION OF INTERMEDIATE, UNKNOWN IMPURITIES AND Z ISOMER IN ENTACAPONE API BY HPLC

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Figure

FIG.2: CHROMATOGRAM OF STANDARD PREPARATION
FIG. 5: LINEARITY GRAPH FOR Z ISOMER (IMPURITY)
FIG. 7: TEST PREPARATION CHROMATOGRAM OF ENTACAPONE API.
TABLE 5: CALCULATION OF % W/W OF IMPURITIES UNDER METHOD PRECISION. Sr. No Intermediate (%w/w) Z Isomer Highest Total Impurities

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Keywords : Al, Ca, Mg, base cations, acid-neutralisation, stream acidification, recovery, stream sediment, experiment, modelling, adsorption, desorption, adsorption, Czech