Structure image of 020664. 1,4-Dideoxy-1,4-dihydro-3-[(E)-[(4-methyl-1-piperazinyl)imino]methyl]-1,4-dioxo-Rifamycin; Rifampin Quinone; 5,17,19,21-tetrahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-8-[N-(4-methyl-1-piperazinyl)formimidoyl]-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-1,6,9,11(2H)-tetrone 21-Acetate; NSC 145633; Rifaldazinequinone