Abstract: A compound represented by general formula (I) below, or a pharmacologically acceptable salt thereof: wherein X represents sulfonic acid group; R1 and R2 represent substituents; R3 to R6 represent optionally substituted alkyl groups; R7 and R8 represent an optionally substituted alkyl groups; L1 to L3 represent optionally substituted methine groups, with at least one of L1 to L3 being a methine group having a substituent with the bulkiness of an ethyl group or greater; r represents an integer of from 0 to 3, and when r is 2 or more, the plural L2 and the plural L3 may be the same or different, respectively; each of m and n independently represents an integer of 0 to 3; and at least one of the substituents is sulfonic acid group or a group comprising sulfonic acid group, which is useful as an imaging component in a near infrared fluorescence imaging agent.

Abstract: A compound represented by general formula (I) below, or a pharmacologically acceptable salt thereof: wherein X represents sulfonic acid group or phosphoric acid group; R1 and R2 represent substituents; R3 to R6 represent optionally substituted alkyl groups; R7 and R8 represent optionally substituted alkyl groups; L1 to L3 represent optionally substituted methine groups; r represents an integer of from 0 to 3, and when r is 2 or more, the plural L2 and the plural L3 may be the same or different, respectively; each of m and n represent integers of 0 to 3; at least one of the substituents is an acid group selected from sulfonic acid group, carboxylic acid group, and phosphonic acid group or a group comprising the acid group; and two or more of the acid groups and X are selected from carboxylic acid group and phosphonic acid group.

Abstract: A compound represented by general formula (I) below, or a pharmacologically acceptable salt thereof: wherein X represents sulfonic acid group; R1 and R2 represent substituents; R3 to R6 represent optionally substituted alkyl groups; R7 and R8 represent an optionally substituted alkyl groups; L1 to L3 represent optionally substituted methine groups, with at least one of L1 to L3 being a methine group having a substituent with the bulkiness of an ethyl group or greater; r represents an integer of from 0 to 3, and when r is 2 or more, the plural L2 and the plural L3 may be the same or different, respectively; each of m and n independently represents an integer of 0 to 3; and at least one of the substituents is sulfonic acid group or a group comprising sulfonic acid group, which is useful as an imaging component in a near infrared fluorescence imaging agent.