All Photos(2)



Imprint® DNA Modification Kit

For bisulfite DNA conversion & purification

EC Number:

Quality Level


sufficient for 50 reactions

storage temp.


Related Categories

General description

The Imprint® DNA Modification Kit contains all of the reagents necessary for complete bisulfite conversion and subsequent purification of DNA samples. DNA is chemically denatured to allow bisulfite reagent to react specifically with single-stranded DNA, thereby deaminating cytosine and creating a uracil residue. Converted DNA is suitable for a variety of downstream applications including Methylation-Specifc PCR, methylation sequencing, and pyrosequencing, as well as methylation microarray.


Imprint® DNA Modification Kit has been used for bisulfite modification of DNA.

Features and Benefits

  • Only 50 picograms of DNA or 20 cells are required
  • Procedure takes less than 2 hours
  • Greater than 99% conversion rate
  • Extremely low degradation
  • Option of convenient one-step protocol
  • Consistent and reproducible Bisulfite Modification
  • Can be used with genomic, endonuclease digested, and FFPE DNA

Storage and Stability

All components can be stored at room temperature. Each vial of DNA Modification Powder is sufficient for ten DNA modifications. Once dissolved, the solution can be stored at -20 °C for one week, kept away from light. Before use, the frozen solution must be thawed at room temperature and vortexed for two minutes.

Legal Information

Imprint is a registered trademark of Sigma-Aldrich Co. LLC

Kit Components Also Available Separately

Product No.

  • T3566Clear-view Snap-Cap microtubes, size 1.5 mL, natural


CorrosionExclamation mark

Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Supplementary Hazards

Storage Class Code

8A - Combustible, corrosive hazardous materials



Certificate of Analysis

Certificate of Origin

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How many reactions can be run with Product MOD50, Imprint® DNA Modification Kit?

    This kit can be used for 50 reactions.

  4. What is the minimum amount of DNA that can be used with Product MOD50, Imprint® DNA Modification Kit?

    DNA amounts ranging from 0.1 ng to 1 mg have been used successfully. For optimal modification, the DNA quantity should be in the range of 50-200 ng.

  5. Can I use Product MOD50, Imprint® DNA Modification Kit with DNA templates that contain high GC content or secondary structures?

    Yes, but it will be necessary to increase the bisulfite reaction time to 150 to 180 min.

  6. Can you store the DNA modified using Product MOD50, Imprint® DNA Modification Kit?

    The modified DNA generated with this kit can be stored for 2 months at -20 °C, 6 months at -80 °C.

  7. Can Product MOD50, Imprint® DNA Modification Kit, be used on formalin-fixed tissue ?

    Yes, it can be used on formalin-fixed tissue, but one would need to amplify the gene of interest before bisulfite treatment

  8. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  9. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Heather J Lee et al.
Methods in molecular biology (Clifton, N.J.), 1712, 87-95 (2017-12-11)
DNA methylation is an epigenetic mark implicated in the regulation of key biological processes. Using high-throughput sequencing technologies and bisulfite-based approaches, it is possible to obtain comprehensive genome-wide maps of the mammalian DNA methylation landscape with a single-nucleotide resolution and
Priyadarshini Kachroo et al.
Epigenomics, 10(2), 133-147 (2018-01-16)
To determine whether methylation differences between mostly fatal TCF3-HLF and curable TCF3-PBX1 pediatric acute lymphoblastic leukemia subtypes can be associated with differential gene expression and remission. Five (extremely rare) TCF3-HLF versus five (very similar) TCF3-PBX1 patients were sampled before and
Matilde Y Follo et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(39), 16811-16816 (2009-10-07)
Lipid signaling pathways are involved in cell growth, differentiation, and apoptosis, and could have a role in the progression of myelodysplastic syndromes (MDS) into acute myeloid leukemia (AML). Indeed, recent studies showed that phosphoinositide-phospholipase (PI-PL)Cbeta1 mono-allelic deletion correlates with a
Masoumeh Afzali et al.
Iranian biomedical journal, 17(2), 77-83 (2013-04-10)
The protein of Niemann-pick type C1 (NPC1) gene promotes the egress of cholesterol from late endosomes and lysosomes to other cellular compartments and contributes to a process known as reverse cholesterol transport. This study aimed to examine whether promoter methylation
David E Condon et al.
BMC bioinformatics, 19(1), 31-31 (2018-02-07)
Identification of differentially methylated regions (DMRs) is the initial step towards the study of DNA methylation-mediated gene regulation. Previous approaches to call DMRs suffer from false prediction, use extreme resources, and/or require library installation and input conversion. We developed a


DNA Methylation and Bisulfite Conversion

There are several common ways to determine whether a gene contains methylated DNA. Since mammalian methylation occurs at cytosines, researchers take advantage of the fact that methylated cytosine (meC) is stable to bisulfite treatment but unmethylated cytosine is transformed to uracil under the same conditions.

Related Content

Imprint ® DNA Modification Kit (MOD50) Protocol

The Imprint DNA Modification Kit provides the reagents needed for bisulfite conversion and post-modification clean-up of DNA samples in less than 2 hours.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service