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Table 1 Substituents to the diazo salts reacted with Naphthol AS-G

From: The synthesis characterization of historical novel azo pigments: implications for conservation science

Substituent 2Substituent 1
2-NO2−2-CH3, 5-Cl-2,5-di-Cl2,4-di-NO24-OCH33-CN4-CF3
2-NO2−X      
2-CH3, 5-Cl-XX     
2,5-di-Cl  X    
2,4-di-NO2  XX   
4-OCH3  XXX  
3-CN  XXXX 
4-CF3  XXXXX