| 摘要 |
PROBLEM TO BE SOLVED: To provide an objective compound that can give an image having good contrast, to provide an intermediate for the compound and to provide a contrast medium.SOLUTION: The compound represented by formula (I) or a salt thereof is provided. (Z is O, S or NH; nis 0, 1 or 2; Y is an alkyl group or (CH)n-CO-R; nis an integer of 2 to 6; Ris OH, alkoxy, NHor NH(CH)-(OCHCH)-OR; Ris H or an alkyl group; n is an integer of 2 or more; R is H, halogen, OH, alkoxy, alkyl, CN, NOor carbamoyl)SELECTED DRAWING: Figure 1 |
