Cy7

Cy7 is a blue to green fluorescent dye by GE Healthcare (Amersham Pharmacia) with a Nah-IR emission. It is used for DNA sequencing (Beckman as Blackwell Red dye). We couple the dye as an active ester to primer amino groups after the synthesis (terminal or intern dT-NH2). The dye is unstable, very light-intensive in and is rarely used.

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