1-[[[3,11-Dihydroxy-3'-oxospiro[7H-dibenzo[c,h]xanthene-7,1'(3'H)-isobenzofuran]-5'(or 6')-yl]carbonyl]oxy]-2,5-pyrrolidinedione
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5(6)-CARBOXYNAPHTHOFLUORESCEIN N-SUC-CIN
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Benzoic acid, 5-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-2-(11-hydroxy-3-oxo-3H-dibenzo[c,h]xanthen-7-yl)-
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2,5-Pyrrolidinedione,1-[[[3,11-dihydroxy-3'-oxospiro[7H-dibenzo[c,h]xanthene-7,1'(3'H)-isobenzofuran]-5'(or6')-yl]carbonyl]oxy]
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5-{[(2,5-Dioxo-1-pyrrolidinyl)oxy]carbonyl}-2-(11-hydroxy-3-oxo-3H-dibenzo[c,h]xanthen-7-yl)benzoic acid
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5-(6)-Carboxynaphthofluoroscein N-succinimidyl ester
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SPIRO[7H-DIBENZO[C,H]XANTHENE-7,1'(3'H)-ISOBENZOFURAN],2,5-PYRROLIDINEDIONE
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3,11-Dihydroxy-3'-oxospiro[7H-dibenzo[c,h]xanthene-7,1'(3'H)-isobenzofuran]carboxylic acid 2,5-dioxo-1-pyrrolidinyl ester
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