There are two ways of ordering:

1. The preferred way is order transmission through our Web Order Portal for most convenient online shopping (please refer here for further details).
2. You can order by sending us an e-mail at oligo@metabion.com with our pre-formatted excel order file as attachment. Download respective Order Form.
   

When you write your e-mail, please make sure to include the following required information in the excel template:

1. Name of the siRNA/s.
2. Sequence of the siRNA/s in 5’-3’ orientation. 
   
3. Yield range.
4. Purification required.
5. Delivery form (dry/in water/buffer + concentration).
6. Modifications.

If you are a new customer, please additionally provide us with:

1. Your shipping and billing address.
2. Any other information like Purchase Order number, VAT number (VAT only for customers resident in the EU), etc.

In case you choose to transmit orders via e-mail using your own format(s), we need to alert you that above mentioned information in bold print is obligatory for processing your order. Due to extra efforts necessary for individual order format transfer into our system, order processing will take longer as compared to preferred web orders and pre-formatted e-mails. Please note that only files updated to the latest excel/word version (e.g. .xlsx or .docx) are accepted.

How can you convert files to newer formats?
Open the file in a recent Office program and save the file in a newer format. For this go to “File” → “Save as” and choose the newer format from the “Save as type” dropdown menu.

If you want to connect your eProcurement System with our Web Order Portal (e.g. OCI - Open Catalog Interface), please simply contact our Customer Service (customerservice@metabion.com).

You may want to consider the following:

Given the use of siRNA oligos in cells and in vivo, high purity is essential.

High pressure liquid chromatography (HPLC) purification is standard (no additional charge) for siRNAs. For applications in cells and in vivo, we recommend an additional Size Exclusion Chromatography (SEC) purification. This is a purification that removes salts and other small molecules, whose quantity and/or quality can be toxic for cells.

Unless requested, siRNA are synthesized with neither 3´nor 5´ phosphate. Both, the 5´and the 3´-end will carry a Hydroxyl-group. The 5´ phosphorylation of both strands is available as a modification at additional charge.

The expected average in-house turnover time for siRNAs is 5–10 working days. Please note that we perform strict quality controls on each and every oligo. In case one or more oligos do not pass our quality control, they will need to be resynthesized. This may, of course, result in a delay.

In terms of "counting" working days, orders placed past 15:00 (Munich time) are considered to be next day's order.

All oligonucleotides, whether single-stranded or double-stranded oligos, are provided as dried pellets and shipped at ambient temperature. While being stable at room temperature for 2–4 weeks, they should be placed at –20 °C or at lower temperature upon receipt.

The label on the siRNA tube shows basic information like oligo name, name of person who placed the order, siRNA sequence including modifications, oligo ID, amount of RNA (OD₂₆₀ and nmol), Tm, and molecular weight.

In addition, you will receive a technical data sheet containing more detailed information on the physical-chemical properties of the oligo, such as base composition, base count, purification grade, amount of RNA in nmol, Tm and molecular weight. Additionally, you will also receive a hard copy of the Mass-Check documentation/spectrum of each single strand of the duplex. The following terminology is used for differentiating between offered QC options including respective documentation coverage in our order forms and on supporting documents delivered with the products:

Mass Check
Standard quality control performed on each and every oligo. Either MALDI- or ESI-ToF, subject to the "nature of the oligo", and metabion internal procedures. This service is free of charge and the Mass Check spectrum will be provided.

MALDI-ToF
Explicitly ordered and performed MALDI-ToF check. Product delivered with MALDI-ToF spectra. Additional charges apply.

ESI-ToF
Explicitly ordered and performed ESI-ToF check. Product delivered with ESI-ToF spectra. Additional charges apply.

While some manufacturers state that re-annealing is generally not necessary, we do recommend to re-anneal the dissolved duplex using a suitable protocol. For your convenience, we recommend to follow our guidelines prepared for download.

RNA duplexes are significantly more resistant to nucleases than a single strand RNA oligonucleotide. However, maintaining sterile, RNAse free conditions is always recommended as a precaution. Dried pellets are stable at room temperature for 2–4 weeks, but should be placed at –20 °C or –80 °C for long term storage. Under these conditions, dry RNA is stable for at least one year. If you want to store your RNA in solution re-suspend the delivered pellet in an RNAse-free solution buffered at pH 7.4 – 7.6 and store at –20 °C or less. We recommend that RNAs are re-suspended at a convenient stock concentration and stored in small aliquots to avoid multiple freeze thaw cycles.