Propargyl-PEG4-bromide is a crosslinker that can be used in copper catalyzed azide-alkyne Click Chemistry to form a stable triazole linkage with azides. The bromide (Br) acts as a good leaving group for nucleophilic substitution reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Propargyl-PEG4-bromide is a crosslinker that can be used in copper catalyzed azide-alkyne Click Chemistry to form a stable triazole linkage with azides. The bromide (Br) acts as a good leaving group for nucleophilic substitution reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Usages:
For the differentiation of Gram-negative bacteria on the basis of citrate utilization.
Principle:
Magnesium ions in various metabolic cofactors; ammonium dihydrogen phosphate to provide nitrogen; dipotassium hydrogen phosphate is the buffer; sodium citrate as a carbon source; agar as medium coagulant.
Formulation(per liter):
Sodium chloride 5g
Magnesium sulfate 0.2g
Ammonium dihydrogen phosphate 0.2g
Sodium ammonium phosphate 0.8g
Sodium citrate 2g
Agar 15g
Bromothymol blue 0.08g
Final pH 7.0 ± 0.2
How to use:
1.Suspend 23.3g in 1 L of distilled water , stirring heated to boiling until completely dissolved, dispensing flask, 121 autoclave for 15min.
2.Diluted and treated samples.
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
500g
K-FRGLQR
SKU: 700004283
1100 assays (microplate) / 1100 assays (auto-analyser)
| Content: | 1100 assays (microplate) / 1100 assays (auto-analyser) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 6 months under recommended storage conditions |
| Analyte: | D-Fructose, D-Glucose |
| Assay Format: | Microplate, Auto-analyser |
| Detection Method: | Absorbance |
| Wavelength (nm): | 340 |
| Signal Response: | Increase |
| Linear Range: | 0.4 to 20 µg of D-glucose plus D-fructose per assay |
| Limit of Detection: | 133 mg/L |
| Reaction Time (min): | ~ 13 min |
| Application examples: | Wine, beer, fruit juices, soft drinks, milk, jam, honey, dietetic foods, bread, bakery products, candies, desserts, confectionery, ice-cream, fruit and vegetables, condiments, tobacco, cosmetics, pharmaceuticals, paper and other materials (e.g. biological cultures, samples, etc.). |
| Method recognition: | Methods based on this principle have been accepted by AOAC, EN, NEN, NF, DIN, GOST, OIV, IFU, AIJN, MEBAK and IOCCC |
This product has been discontinued, you may be interested in the following replacement product K-FGLQR; 700007621)
The D-Fructose/D-Glucose (Liquid Ready) test kit is a rapid, reliable and accurate method for the specific measurement and analysis of D-fructose and D-glucose in wine, beverages, foodstuffs and other materials. Supplied as a “ready to use” liquid stable formulation that is suitable for auto-analyser and microplate formats.
Find more of our monosaccharide and oligosaccharide assay kits.
Advantages
This product has been discontinued, you may be interested in the following replacement product K-FGLQR; 700007621)
K-PYRUV
SKU: 700004330
100 assays (manual) / 1000 assays (microplate) / 1000 assays (auto-analyser)
| Content: | 100 assays (manual) / 1000 assays (microplate) / 1000 assays (auto-analyser) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 2 years under recommended storage conditions |
| Analyte: | Pyruvic Acid |
| Assay Format: | Spectrophotometer, Microplate, Auto-analyser |
| Detection Method: | Absorbance |
| Wavelength (nm): | 340 |
| Signal Response: | Decrease |
| Linear Range: | 0.3 to 40 µg of pyruvic acid per assay |
| Limit of Detection: | 0.39 mg/L |
| Reaction Time (min): | ~ 3 min |
| Application examples: | Wine, beer, fruit juices, soft drinks, cheese, dietary supplements, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.). |
| Method recognition: | Novel method |
For the specific and rapid measurement and analysis of pyruvic acid in beer, wine, fruit juice, food products and bodily fluids.
Note for Content: The number of manual tests per kit can be doubled if all volumes are halved. This can be readily accommodated using the MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
Display our full list of assay kits for various organic acids.
Advantages
For the specific and rapid measurement and analysis of pyruvic acid in beer, wine, fruit juice, food products and bodily fluids.
