t-Boc-aminooxy-PEG5-propargyl is a click crosslinker. Propargyl group is reactive with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. T-Boc-aminooxy can be converted to free aminooxy under mild acidic conditions and then can react with an aldehyde or ketone. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

t-Boc-aminooxy-PEG5-propargyl is a click crosslinker. Propargyl group is reactive with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. T-Boc-aminooxy can be converted to free aminooxy under mild acidic conditions and then can react with an aldehyde or ketone. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Introduction

HiPure RNA Clean Up Kit provides a rapid and easy method for the purification and concentrate RNA from enzymatic reactions or for desalting the RNA samples. RNA purified using HiPure RNA Clean Up Kit is ready for all downstream applications such as RT-PCR, Northern blotting, mRNA purification, nuclease protection, and in vitro translation.

Details

Specifications

Features	Specifications
Main Functions	Purification and concentration of RNA（mRNA>200nt or miRNA）from transcription products, DNase cleavage products, labeled products, and crude RNA products
Applications	Sequencing, ligation, enzyme digestion, RT-PCR, labeling, etc.
Purification method	Mini spin column
Purification technology	Silica technology
Process method	Manual (centrifugation or vacuum)
Sample type	Crude RNA, enzymatic reaction solution
Sample amount	≤100μl
Recovery	90%
Elution volume	≥15μl
Time per run	≤15 minutes
Liquid carrying volume per column	800μl
Binding yield of column	100μg

Principle

The HiPure system uses a simple bind-wash-elute procedure. Binding buffer is added directly to the sample or other enzymatic reaction, and the mixture is applied to the column. Nucleic acids adsorb to the silica membrane in the high-salt conditions provided by the buffer. Impurities are washed away and pure RNA is eluted with a small volume of low-salt buffer provided or water, ready to use in all subsequent applications.

Advantages

• High recovery – recovery of RNA up to 90%
• Low elution volume – the elution volume can be as low as 15µl
• Fast – only 10 minutes for recovery by using column method
• General – suitable for various crude RNA products
• Wide range of fragment recovery:(>25nt RNA)

Kit Contents

Contents	R214402	R214403
Purification Times	50 Preps	250 Preps
Buffer GXP	30 ml	120 ml
Buffer RW2	20 ml	2 x 50 ml
RNase-Free Water	20 ml	60 ml
HiPure RNA Mini Columns I	50	250
2 ml Collection Tubes	50	250

Storage and Stability

The Kit can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. The entire kit can be stored at 2-8°C, but in this case buffers should be redissolved before use. Make sure that all buffers are at room temperature when used.

HiPure RNA Clean Up Kit provides a rapid and easy method for the purification and concentrate RNA from enzymatic reactions or for desalting the RNA samples. RNA purified using HiPure RNA Clean Up Kit is ready for all downstream applications such as RT-PCR, Northern blotting, mRNA purification, nuclease protection, and in vitro translation.

Introduction

Intended Use

For selective enrichment culture of Listeria monocytogenes in food.

Principle and Interpretation

Tryptone, proteose peptone, meat extract, yeast paste powder provide nitrogen sources, vitamins, amino acids, and growth factors; sodium chloride can maintain a balanced osmotic pressure; sodium dihydrogen phosphate and potassium dihydrogen phosphate as buffering agents; esculin are fermentable sugars; lithium chloride and other antibiotics can inhibit Gram negative bacteria and most Gram positive bacteria.

Formulation

Ingredients	/liter
Enzymatic digest of animal tissues　( Proteose peptone)	5.0g
Enzymatic digest of casein　( Tryptone)	5.0g
Meat extract	5.0g
Yeast extract	5.0g
Sodium chloride	20.0g
Disodium hydrogen phosphate dihydrate	12.0g
Potassium dihydrogen phosphate	1.35g
Aesculin	1.0g
Lithium chloride	3.0g
pH7.2±0.2 at 25°C

Preparation

Suspend 57.4g in 1 L of distilled or deionized water. Heat with frequent agitation and boil to completely dissolve the powder. Distribute into flasks. Autoclave at 121℃ for 15 minutes. Cool to 45-50℃,aseptically add the contents of 1 vial of Fraser Selective Supplement (SR0120) to each 225 mL of base to prepare FB1 solution; Add one reagent (SR0130) to each100 mL of FB2 culture medium to prepare FB2 enrichment solution.

Quality Control

Cultural characteristics observed after incubation at 35-37°C for 46~50 hours

Quality control strains	Growth	Characteristics
Listeria monocytogenes ATCC19115 + Escherichia coli ATCC25922 + Enterococcus faecalis ATCC29212	>20 cfu  On PALCAM	Gray to black colony count with black halo
Escherichia coli ATCC25922	< 100 colonies on TSA	Inhibition
Enterococcus faecalis ATCC29212

Storage and Shelf Life

2-30℃，Keep container tightly closed, avoid direct sunlight.

Use before expiry date on the label.

 Precautions

1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort

2. Keep container tightly closed after using to prevent clumping.

Waste Disposal

Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.

Revision

On June 14, 2024

References

ISO 11290

Intended Use For selective enrichment culture of Listeria monocytogenes in food. Principle and Interpretation Tryptone, proteose peptone, meat extract, yeast paste powder provide nitrogen ……