Which yield ranges are offered for ZNA® oligonucleotides?
ZNA®s are delivered in yield ranges for increased transparency and easy calculation of the quantity needed and to be expected. Final yield range is the actual amount that we guarantee to deliver. For example, for a yield range of 5–10 nmol, we guarantee to deliver the final product in a yield between 5 and 10 nmols. See the table below:
*based on oligonucleotides of 8-40 bases in length.
Please note that OD260 values are a measure of total nucleotides´ optical density. Hence, neither purity nor amount of ordered substance are transparently reflected. For simplification and exemplification reasons look at the following:
1 OD of the 20mer 5´CAT CGT ATT CGA TGC TAC GT 3´
translates into approximately 5 nmol.
1 OD of the 40mer 5´CAT CGT ATT CGA TGC TAC GT CAT CGT ATT CGA TGC TAC GT 3´
translates into approximately 2.5 nmol.
Therefore, a 1 OD guaranteed amount of delivered product can vary significantly, while metabion´s commitment to delivered yields in nmol does not allow for ambiguity in terms of what you expect and pay for.