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Oligo I received have brown/yellowisth color . Is this the natural color of DNA or is the brown color a sign of contamination?

Synthetic oligos can appear brown/yellowish, white, or clear depending on the preparation. A brown/yellowish color is caused by the oxidizer used during the synthesis. Fortunately, the oligo still functions well in the assay they are used for.

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Greetings, Researchers,

Please be advised that any information, guidelines, write-ups, and oral/video/graphic content on our website are intended solely as general guidelines.

It is the researcher's sole responsibility to conduct thorough research on the design of products intended for their experiments before submitting
their designs to Biosynthesis for production feasibility review.

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