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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.

What is the length of the TEG spacer in your Biotin-TEG modification, and do you offer a longer spacer arm than TEG?

Unlike the commonly employed carbon spacer arm in many modifications, the Biotin-TEG uses a 15 atom tetraethylene glycol spacer arm, hence the name TEG.

If you need a longer spacer arm, you can order a 5' or 3' biotinylated oligo with up to three Spacer 18 (18 atom hexaethylene glycol spacer) modifications between the biotin modification and the oligo sequence.

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.