029040 Methyl Red Reagent
Usage:For Methyl Red Test.
Specification:10ml
10ml
endo-BCN-PEG3-Gly represents an ADC linker featuring a BCN group, a hydrophilic PEG3 linker, and glycine residue. The BCN group is a click chemistry handle that readily reacts with azide groups on a target molecule to form stable triazole linkages. The PEG units enhance the aqueous solubility of the compound and may assist in fine-tuning DMPK properties. This compound may be applied to the synthesis of antibody-drug conjugates.
endo-BCN-PEG3-Gly represents an ADC linker featuring a BCN group, a hydrophilic PEG3 linker, and glycine residue. The BCN group is a click chemistry handle that readily reacts with azide groups on a target molecule to form stable triazole linkages. The PEG units enhance the aqueous solubility of the compound and may assist in fine-tuning DMPK properties. This compound may be applied to the synthesis of antibody-drug conjugates.
For the selective isolation and culture of Listeria monocytogenes.
Peptone provides the carbon and nitrogen sources necessary for growth; yeast extract powder and starch provide carbon and nitrogen sources, vitamins and growth factors; sodium chloride can maintain a balanced osmotic pressure; glucose provides a carbon source; Listeria hydrolyzes esculin and reacts with iron ions to form black 6,7-dihydroxycoumarin; mannitol is a fermentable sugar, and phenol red is a pH indicator; lithium chloride and other antibiotics can inhibit Gram-negative bacteria and most Gram-positive bacteria; agar is the coagulant of the culture medium.
| Ingredients | /liter |
| Peptone | 23 g |
| Starch | 1 g |
| NaCl | 5 g |
| Columbia agar | 13 g |
| Mannitol | 10 g |
| Ferric ammonium citrate | 0.5 g |
| Esculin (aesculin) | 0.8 g |
| Dextrose (glucose) | 0.5 g |
| Lithium chloride | 15.0 g |
| Phenol red | 0.08 g |
| pH7.2±0.2 at 25°C | |
Weigh 68.9g of dry powder of this product, add 1L of distilled water or deionized water, stir, heat and boil until completely dissolved, divide into Erlenmeyer bottles, sterilize at 121℃ for 15min, cool to room temperature and set aside. Heat to dissolve agar before use, cool to 50℃, add 1 tube of supporting reagent (SR0140) per 100mL of basal culture medium, shake well and pour into sterilized culture dish.
The following quality control strains were inoculated and cultured at 35-37℃ for 24h. The results are as follows:
| Quality control strains | Growth |
| Listeria monocytogenes ATCC19115 | Gray-green colonies with a black depression in the center and black surrounding |
| Enterococcus faecalis ATCC29212 | – |
| Escherichia coli ATCC25922 | – |
2-30℃，Keep container tightly closed, avoid direct sunlight.
Use before expiry date on the label.
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.
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Intended Use For the selective isolation and culture of Listeria monocytogenes. Principle and Interpretation Peptone provides the carbon and nitrogen sources necessary for growth; yeast ex……