1
Kayane Yutaka, Omura Takashi, Miyamoto Tetsuya, Sawamoto Hiroazu, Harada Naoki, Takeshita Akira: Monoazo pyridone compound.. Sumitomo Chemical Co, February 26, 1986: EP0172283-A1 (23 worldwide citation)

A pyridone compound of the following formula, or a salt thereof, wherein R1 and R2 are independently a hydrogen atom or a lower alkyl group having up to 4 carbon atoms. X is a hydrogen atom or methyl or sulfo group, A is an unsubstituted or substituted phenylene or naphthylene group, and Y is -SO2CH ...


2
Masao Nishikuri, Kiyoyasu Hashimoto, Hideo Hattori: Monoazo pyridone compounds and application thereof for dyeing of hydrophobic fiber materials. Sumitomo Chemical Company, Stevens Davis Miller & Mosher, May 2, 1989: US04826505 (2 worldwide citation)

A monoazo pyridone compound of the following formula, ##STR1## wherein X is a member selected from hydrogen, halogeno, alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, aralkoxycarbonyl, alkylsulfonyl, arylsulfonyl, carbamoyl, sulfamoyl or cyano, and R is alkyl, alkenyl, cycloalkyl, phenyl or anilino, w ...