Benzoicacid,2-[[[3-[4,5-dihydro-4-[(2-hydroxy-4-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]phenyl]sulfonyl]amino]-,monosodium salt (9CI); C.I. Mordant Red 39, monosodium salt (8CI); C.I. 18885;C.I. Mordant Red 39; Diamond Chrome Fast Red BB; Metachrome Red BB; MonochromeRed BB; Telon Chrome Red C