LACCAIC ACID A;LACCAIC ACID A STANDARD;7-[2-Hydroxy-5-[2-(acetylamino)ethyl]phenyl]-3,5,6,8-tetrahydroxy-9,10-dioxo-9,10-dihydro-1,2-anthracenedicarboxylic acid;7-[5-[2-(Acetylamino)ethyl]-2-hydroxyphenyl]-9,10-dihydro-3,5,6,8-tetrahydroxy-9,10-dioxo-1,2-anthracenedicarboxylic acid
