Synonyms: C.I. AcidYellow 42, disodium salt (8CI);[1,1'-Biphenyl]-2,2'-disulfonic acid,4,4'-bis[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-, disodiumsalt (9CI);Acid Anthracene Yellow GR;Acid Fast Yellow MR;Acid Leather YellowCRS;Acid Milling Yellow M;Acid Milling Yellow R;Acid Yellow FG;Acid YellowK;Acid Yellow M;Acid Yellow MD;Acid Yellow MR;Acid yellow 42;AiredaleYellow 3GM;Alphanol Fast Brilliant Yellow F 333;Amacid Fast Yellow RS;AmacidFast Yellow RS-EX;Ambinyl Yellow MR;Anadurm Yellow M-G;Apollo Nylon FastYellow M-R;Belacid Milling Yellow R;Benzyl Fast Yellow RS;Best Acid MillingYellow GR;C.I. 22910;C.I. Acid Yellow 42;Calcocid Milling Yellow R;Colorosacid Yellow R;Concorde Acid Yellow M-GR;Concorde Leather Yellow MR;Coomassie Yellow R;Coomassie Yellow RP;Coomassie Yellow RS;Coriacide Yellow3J;Covalene Yellow MR;Covanyl Yellow MR;Cyanine Fast Yellow M;DermacidYellow 2R;Dinacid Milling Yellow M;Dycosacid Leather Yellow MR;DynacidYellow RS;Eniacid Fast Yellow R;Erio Fast Yellow RL;Everacid Milling YellowMR;Everacid Yellow MR;Fast Silk Yellow SH;Follone Yellow R;Formo AcidYellow 42;Indacid Yellow A;KCA Acid Milling Yellow M;KemacidYellow GRX;Kenanthrol Yellow R;Lecotan Yellow SH;Midlon Yellow 2R;MidlonYellow PR;Milling Fast Yellow R;Milling Yellow 3G;Milling Yellow 3J;MillingYellow FG;Milling Yellow RX;Multicuer Yellow BR;Naphthalene Leather Yellow2G;Naphthazine Yellow MR;Optanol Yellow R;Orient Water Yellow 6;OrientWater Yellow 6C;Pharmacine Yellow R;Pharmatex Yellow G;Ratna Acid Yellow R;Sakolan Yellow KN;Sandolan Milling Yellow N-SH;Shikiso Acid Fast Yellow MR;Simacid Yellow 25145;Sulfonine Yellow CSR;Sulphon Yellow RS-CF;SuminolMilling Yellow MR;Supranol Yellow R;Symulon Acid Fast Yellow MR;TertracidMilling Yellow R;Triacid Fast Milling Yellow 2R;Triacid Yellow 2R;VicoacidYellow 42;Vopsider Yellow ARL;Water Yellow 6;Water Yellow 6C;Xylene MillingYellow SH;