| 摘要 |
PROBLEM TO BE SOLVED: To provide a new radioisotope-labeled pigment compound. SOLUTION: This compound is expressed by general formula (I), wherein, R<SP>1</SP>and R<SP>2</SP>each independently represents a substituent; R<SP>3</SP>to R<SP>6</SP>are same or different and each represents a substituted or unsubstituted alkyl group; R<SP>7</SP>and R<SP>8</SP>each represents a substituted or unsubstituted alkyl group; L<SP>1</SP>to L<SP>3</SP>are same or different and each represents a substituted or unsubstituted methine group; r denotes an integer of 0-3; when r is 2 or larger, the plurality of L<SP>2</SP>and L<SP>3</SP>are same or different; P and Q each independently represents<SP>123</SP>I,<SP>124</SP>I,<SP>125</SP>I<SP>131</SP>I or<SP>18</SP>F; M represents a hydrogen atom, Na or K; and m and n each independently denotes an integer of 0-2. COPYRIGHT: (C)2008,JPO&INPIT
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