| abstract |
A compound represented by the following general formula (I) or a salt thereof: n n n n n n n n n n n n [wherein R 1 and R 2 represent hydrogen atom, a C 1-6 alkyl group, or a group represented by the following formula (A): n n n n n n n n n n n n n n n n [wherein X 1 and X 2 represent hydrogen atom, or a group represented as —N(R 3 )(R 4 ) (R 3 and R 4 represent hydrogen atom, a C 1-6 alkyl group, a C 1-6 alkylcarbonyl group, or a C 1-6 alkyloxycarbonyl group); and n represents an integer of 1 to 6 ], provided that R 1 and R 2 do not simultaneously represent hydrogen atom), which is a novel luciferin derivative that serves as a luciferase substrate. |