IRDye 680RD NHS Ester, Maleimide, and Carboxylate Dye Structures.
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IRDye® 680RD Dye Structures

IRDye 680RD NHS Ester

Chemical Formula: C43H45ClN4Na2O13S3

Molecular Weight: 1003.46

IRDye 680RD Maleimide

Chemical Formula: C45H48ClN5Na2O12S3

Exact Mass: 1027.19

Molecular Weight: 1028.52

IRDye 680RD Carboxylate

Chemical Formula: C39H41ClN3Na3O11S3

Exact Mass: 927.13

Molecular Weight: 928.37

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