| abstract |
An object of the present invention is to provide a compound having excellent absorbance. The present invention relates to a compound represented by the formula (AI). [R 1a to R 8a are hydrogen atoms, alkyl groups, SO 3 − groups or SO 3 M groups; R 9a and R 10a are hydrogen atoms, alkyl groups, aromatic hydrocarbon groups, or aralkyl groups; R 11a to R 20a is a hydrogen atom, alkyl group, halogen atom, SO 3 - group or SO 3 M group; R 45a and R 46a are hydrogen atoms, alkyl groups and aromatic hydrocarbon groups; R 55a is a hydrogen atom, alkyl group Group, aromatic hydrocarbon group. ] |