t-Boc-aminooxy-PEG3-propargyl is a click reagent with a propargyl group and t-Boc-aminooxy group. The propargyl group can react with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. T-Boc-aminooxy group can be free up under mild acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
t-Boc-aminooxy-PEG3-propargyl is a click reagent with a propargyl group and t-Boc-aminooxy group. The propargyl group can react with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry. T-Boc-aminooxy group can be free up under mild acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
The Norgen water purification system has been designed in conjunction with experts from Millipore Sigma. The Ultrapure NFW is purified in a two-stage process. The first stage, to produce type II water, includes pre-treatment with activated charcoal and polyphosphate, this water then undergoes reverse osmosis, electro-deionization and ion exchange to remove contaminants as well as UV treatment for disinfection. The Pure water then flows to a second system in a clean room with an additional 4 layers of purification. After passing through an additional ion exchange column, the water is then subjected to Ultrafiltration to remove particulates, bacteria, & ionic contaminants down to trace level, the water is then treated with UV light (182 nm wavelength) to break down organic matter. Lastly a second Ultrafilter for the production of pyrogen-, nuclease- and bacteria-free water at 18.2 MΩ. This water is of utmost purity and suitable for direct use in molecular biology applications such as qPCR and NGS, as well as cell culture and other applications.
| Product Specifications | |
| pH | n/a (highly pure water does not contain enough ions for an exact pH determination.) |
| Recommended Storage | Room Temperature |
| Grade | Ultrapure (ASTM Type I) |
| Biological Activity | DNase-, RNase-, Protease-, Endotoxin- Free |
| TOCs | < 50 ppb |
| Resistivity | > 18 MΩ-cm |
| Treatment | Not DEPC-Treated |
| Quantity | 100 mL, 500 mL, 1000 mL |
| Purification Methods | Activated charcoal, polyphosphate, reverse osmosis, electro-deionization, ion exchange, UV, ultrafiltration |
| Shipping Conditions | Room Temperature |
Applications
For use in any molecular biology application
Storage Conditions
Norgen’s Nuclease-Free Water should be stored at room temperature. Storage at +4°C or -20°C is optional.
Precautions and Disclaimers
This product is designed for research purposes only. It is not intended for human or diagnostic use.
Usages:
For the rapid detection and enumeration of Escherichia coli.
Principle:
Peptone and yeast extract powder provides carbon and nitrogen sources and trace elements; sodium chloride maintains osmotic equilibrium; agar as medium coagulant; dodecyl sulfate inhibit Gram-positive bacteria; chromogenic substrate and large intestine coli β- glucuronidase enzyme specific reaction, hydrolysis of the substrate, the release of the color groups produce green colonies on the light yellow plate.
Formulation (per liter):
Peptone :15.0g
Yeast extract powder: 3.0g
Sodium chloride: 5.0g
Sodium lauryl sulfate:0.1g
Agar: 12.0g
Chromogenic substrate 6.5g
Final pH 7.0 ± 0.2
How to use:
1. Weigh 41.6g of the product, adding 1.0L distilled or deionized water, heated to boiling stirring until completely dissolved, dispensing into flask, 115 autoclaved for 10minutes.
2. Take 25.0g or 25.0ml of sample with sterile procedures , added to the flask containing 225.0mL of sterile phosphate buffered saline (or saline) , shaken thoroughly homogenized with a homogenizer or a 1:10 dilution of 1min solution, diluted 1:10 and then continue to select the appropriate serial dilutions of three, the two plates inoculated with each dilution, poured dissolved by heating and cooled to about 45 medium.
3, observe the results.
Quality Control
This product appears light yellow after the pouring on plate, these strains were inoculated after 36 ± 1 18 ~ 24h culture growth in the following table.
Bacteria name Bacteria NO. Growth Situation Feature
Escherichia coli ATCC25922 good green colonies
Citrobacter ATCC8090 good colorless colonies
Salmonella typhimurium CMCC50115 good colorless colonies
Enterococcus faecalis ATCC29212 suppressed —–
Storage: Store in a dark, cool and dry place, tighten the caps immediately after use. Storage period of two years.
1000mL
Transparent perforated gas permeable film which is peelable, pierceable and suitable for cell culture.
