2-(3-Chlorophenyl)-4-((5-(ethylsulphonyl)-2-hydroxyphenyl)azo)-2,4-dihydro-5-methyl-3H-pyrazol-3-one 3H-Pyrazol-3-one, 2-(3-chlorophenyl)-4-((5-ethylsulfonyl)-2-(hydroxyphenyl)azo)-2,4-dihydro-5-methyl- 50978-79-5 EINECS 256-884-5