Importance

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Abstract

To provide a novel boron-containing compound. A compound represented by the following formula: wherein black circle represents B, white circles represent B—H; —R¹ represents —(CH₂)n-X¹—R³ (n represents an integer of 0 to 6; X¹ represents O, S, NH, S—S, O—CO, NHCO or SCO, or does not exist; R³ represents C₆-C₂₀ alkyl, hydroxy C₆-C₂₀ alkyl, amino C₆-C₂₀ alkyl, azido C₆-C₂₀ alkyl, hydroxycarbonyl C₆-C₂₀ alkyl, or the like), or a group having a repeating sequence of —(CH₂)₂—O— 3 times or more and 10 times or less and having a methyl group or an ethyl group at the end on the oxygen atom side; and —R² is —(CH₂)m-X²—R⁴ (m represents an integer from 0 to 8; X² represents O, S, NH, S—S, O—CO, NHCO or SCO, or does not exist; and R⁴ represents a tumor recognition moiety), or does not exist

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First Claim