Synonyms: sodium 2-(4-{(e)-[1-(hydroxymethyl)-3-methyl-5-oxo-4,5-dihydro-1h-pyrazol-4-yl]diazenyl}phenyl)-6-methyl-1,3-benzothiazole-7-sulfonate;AC1Q1W11;AR-1L4437;2-(p-((1-(Hydroxymethyl)-3-methyl-5-oxo-2-pyrazolin-4-yl)azo)phenyl-6-methyl-7-benzothiazolesulfonic acid, monosodium salt;24727-96-6;7-Benzothiazolesulfonic acid, 2-(4-((1-(hydroxymethyl)-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-4-yl)azo)phenyl)-6-methyl-, monosodium salt;7-Benzothiazolesulfonic acid, 2-(4-(2-(4,5-dihydro-1-(hydroxymethyl)-3-methyl-5-oxo-1H-pyrazol-4-yl)diazenyl)phenyl)-6-methyl-, sodium salt (1:1)