1-Cyclohexene-1-carboxamide,4-(1,3-dihydro-4,5-dihydroxy-9-methyl-3-oxonaphtho[2,3-c]furan-1-yl)-3-(dimethylamino)-2,5-dihydroxy-6-oxo-;(3S)-4t-[(R)-4,5-dihydroxy-9-methyl-3-oxo-1,3-dihydro-naphtho[2,3-c]furan-1-yl)-3r-dimethylamino-2,5ξ-dihydroxy-6-oxo-cyclohex-1-enecarboxylic acid amide;β-Apo-oxytetracycline;Β-APO-OXYTETRACYCLINE,BROWN SOLID;Alpha-Apo-Oxytetracycline;B-APO-OXYTETRACYCLINE;BETA-APO OXYTETRACYCLINE;Beta-Apo-oxytetracycline;beta-Apo-oxytetracycline, 'can be used as secondary standard';SS-APO-OXYTETRACYCLINE;b-Apo-oxytetracycline;BETA-APO-OXYTETRACYCLINE;ALPHA-APO-OXYTETRACYCLINE;Apooxytetracycline, beta-;Oxytetracycline EP Impurity EOpen