Formamide (Deionized)
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Invitrogen™

Formamide (Deionized)

Ambion formamide has been deionized, is nuclease-free, and comes packaged as a liquid in an amber glass bottle under argon.深入閱讀
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產品號碼Quantity
AM93445 x 500 g
AM9342500 g
產品號碼 AM9344
價格 (HKD)
4,436.00
Each
新增至購物車
Quantity:
5 x 500 g
價格 (HKD)
4,436.00
Each
新增至購物車

Ambion formamide has been deionized, is nuclease-free, and comes packaged as a liquid in an amber glass bottle under argon. Supplied in 5 bottles containing 500 g each. Formamide lowers the melting temperature of nucleic acid duplexes and is widely used in applications such as Southern and northern blotting, nuclease protection assays, S1 mapping, and in situ hybridization. For critical applications, it is recommended that the formamide from previously opened bottles be deionized before use.

Appearance: Clear, colorless
Molecular Weight: 45.04
Purity: ≥99.5%
Quality Control: The product has been tested for RNase and DNase contamination.

For Research Use Only. Not for use in diagnostic procedures.
規格
ColorColorless
Packaging TypeBottle
Product LineAmbion
Product TypeFormamide
Purity>99.5%
Quantity5 x 500 g
FormLiquid
Unit SizeEach
內容物與存放
Store at 4° or -20°C as small aliquots.

常見問答集 (常見問題)

What do you recommend for long-term storage of RNA?

For long-term storage, we recommend resuspending the RNA in stabilized formamide and storing at -70 degrees C. To remove the formamide, add 4 volumes ethanol and, if less than 20 µg RNA, also add NaCl to 0.2 M. Precipitate the RNA and use for downstream experiments.

Can a sample buffer with formamide be used with the Invitrogen TBE-Urea system?

There are many sample buffer formulations used, however we have found a distinct difference in the band appearance depending on the sample buffer composition. After evaluating urea, formamide, and various buffer systems, we found that the sharpest, flattest bands were obtained with a urea, Ficoll, and TBE buffer solution. Sample buffers made with formamide resulted in fuzzy, indistinct bands.

Find additional tips, troubleshooting help, and resources within our Nucleic Acid Purification and Analysis Support Center.