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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.

Does IDT offer Inosine (I)? How do I order oligos containing Inosine bases?

IDT can synthesize oligonucleotides that contain 2'-deoxyinosine. Deoxyinosine is a universal base that occurs naturally. It should not be confused with riboinosine, which also occurs naturally, and is commonly found in tRNAs.To include a deoxyinosine base(s) in your oligo, simply place an "I" directly in your sequence.

If you are interested in having riboinosine bases included in your oligo, please contact

Custom DNA & RNA