4-(2-phenyldiaz-1-enyl)benzene-1,3-diol 4-(phenyldiazenyl)benzene-1,3-diol 4-(Phenyldiazenyl)benzene-1,3-diol(<span style="color:#055aab">Sudan orange G</span>) C.I.Food orange 3 CI 11920 SOLVENT ORANGE 1 Sudan Orange G Sudan Orange G (~85%) Sudan Orange G (C.I. 11920) Sudan orange G, 95%, reference material Sudan Orange G, 97% Sudan Orange G, pure Sudan Orange G（SOG） SudanOrangeG SudanOrangeG-analyticalstandard,, SudanOrangeG-pure,,