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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.

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!

Custom DNA & RNA

*RUO—For research use only. Not for use in diagnostic procedures. Unless otherwise agreed to in writing, IDT does not intend for these products to be used in clinical applications and does not warrant their fitness or suitability for any clinical diagnostic use. Purchaser is solely responsible for all decisions regarding the use of these products and any associated regulatory or legal obligations.