Isoaureomycin

7-Chloroisotetracycline

canbeusedassecondarystandard,HCl

(4S,4aS,6S,8aS)-6-[(1S)-7-Chloro-1,3-dihydro-4-hydroxy-1-Methyl-3-oxo-1-isobenzofuranyl]-4-(diMethylaMino)-1,4,4a,5,6,7,8,8a-octahydro-3,8a-dihydroxy-1,8-dioxo-2-naphthalenecarboxaMide

2-Naphthalenecarboxamide, 6-(7-chloro-1,3-dihydro-4-hydroxy-1-methyl-3-oxo-1-benzofuranyl)-4-(dimethylamino)-1,4,4A,5,6,7,8,8A-octahydro-3,8A-dihydroxy-1,8-dioxo-, (4S-(4-alpha,4A-alpha,6-beta(R*),8A-alpha))-