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4-epi-OTC

An interlaboratory study was organized for the determination of OTC and 4-epi-OTC in pig muscle tissue. Fourteen laboratories from EU member countries agreed to participate. They were... [Pg.631]

Diode array analysis of heat-treated OTC standard solution indicated that no individual closely related compounds, such as 4-epi-OTC or a- or /3-apo-OTC, formed a significant proportion of the breakdown products (54). [Pg.632]

Oxytetracycline (OTQ and oxytetracycline hydrochloride (OTC HC1) may contain the impurities 4-epi-oxytetracycline (EOTC), tetracycline (TC) and 2-acetyl-2-dec-arboxamido-oxytetracycline (ADOTQ [2,4]. According to European Pharmacopoeia, oxytetracycline hydrochloride may also contain anhydro-oxytetracycline (AOTQ, a-apo-oxytetracycline (a-AOTC), /i-apo-oxytetracyclinc (/FA OTC). The structures are shown in Fig. 1. [Pg.99]

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See also in sourсe #XX -- [ Pg.631 ]



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