| 摘要 |
PROBLEM TO BE SOLVED: To provide a compound having favorable thermal stability used as a dye.SOLUTION: An objective compound is represented by formula (I) (wherein L is a divalent 1-20C hydrocarbon group or the like; X is oxygen, sulfur or the like; A is a 6-20C aromatic group or the like; Rto Rare each hydrogen, a monovalent 1-20C hydrocarbon group or the like; Rto Rare each hydrogen, halogen, cyano, a monovalent 1-20C hydrocarbon group or the like; and Ris hydrogen or the like). |
