The product 2618-250MG has not been assayed for polyphosphate content, and purity is not specified.
2618
Deoxyribonucleic Acid, Sodium Salt, Calf Thymus
Purified DNA from calf thymus. A260/280 nm: ≥ 1.8); S20w: 15.4-17.4; hyperchromicity: ≥27%.
Synonym(s):
Deoxyribonucleic Acid, Sodium Salt, Calf Thymus, DNA, Calf Thymus
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Quality Level
description
RTECS - HG1934000
Merck USA index - 14, 2907
form
solid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
desiccated (hygroscopic)
color
off-white
solubility
water: 1 mg/mL
shipped in
ambient
storage temp.
−20°C
Related Categories
1 of 4
This Item | D3664 | D1501 | D4522 |
|---|---|---|---|
| Quality Level 100 | Quality Level 200 | Quality Level 300 | Quality Level 200 |
| manufacturer/tradename Calbiochem® | manufacturer/tradename - | manufacturer/tradename - | manufacturer/tradename - |
| form solid | form powder or crystals | form fibers | form lyophilized powder |
| solubility water: 1 mg/mL | solubility - | solubility - | solubility - |
| storage temp. −20°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. −20°C |
| color off-white | color - | color white | color - |
General description
A260/280 nm: ≥ 1.8); hyperchromicity: ≥27%.
Purified DNA from calf thymus.
Purified DNA from calf thymus. An essential component of chromosomes. A260/280 nm: ≥ 1.8); hypechromicity: ≥27%.
Preparation Note
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 1 year at -20°C.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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What is the purification process for product 2618-250MG, and to what extent is it pure? There is a suspicion of contamination with polyphosphate.
1 answer-
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which Dna is used for DNAse assay?
1 answer-
There are a number of DNA products that may be suitable. Many DNAse products offered are tested for activity using a DNA type I or III as a substrate. For quality control testing of product D4527, the substrate used is product D3664. This product is tested for suitability in DNAse assays.
See the link below to review this product:
https://www.sigmaaldrich.com/US/en/product/sigma/d3664Helpful?
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what is the approximate molecular weight of this DNA.(Cat. no. 2618-250)
1 answer-
This product is a highly polymerized, high molecular weight, uncut preparation - likely tens of thousands of base pairs in length. Average size is not determined for this product.
If you would like a product with a tested molecular weight, we offer product D4764 which is the genomic DNA from calf thymus as well. It is unsheared and has the molecular weight >20 kb. Please enclosed the product web page: https://www.sigmaaldrich.com/catalog/product/sigma/d4764?lang=en®ion=GB&cm_sp=Insite-_-prodRecCold_xviews-_-prodRecCold10-2
We also offer Product D4416 which is DNA that is categorized as high molecular weight DNA with the molecular weight >50 Kilo-base pair (kbp- same as kb): https://www.sigmaaldrich.com/catalog/product/sigma/d4416?lang=en®ion=GB However this product is isolated from adult BALB/c mice.
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