Frequently asked questions

Our Scientific Applications Support team has assembled a list of frequently asked questions to help you find answers quickly. Filter using one or more categories to focus on specific topics, or use the search bar to perform a text search.

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Do you offer universal bases?

IDT offers the universal bases 5' nitroindole and deoxyInosine, which are sometimes used as universal bases. 5' Nitroindole does not favor any particular base-pairing but does contribute to duplex stability. DeoxyInosine has some base-pairing bias but is less destabilizing than mismatches involving the four standard bases. For more information, see the article, DeoxyInosine: Don’t Call Me a Universal Base!

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Custom DNA & RNA