Glycosyl compounds
Medchemexpress LLC Lactose octaacetate | 6291-42-5 | 98.0% | 678.59 | 50 G
Lactose octaacetate exhibits mild to moderate antifungal activity against certain fungi, while showing low or no activity against bacteria and yeast. It also demonstrates low cytotoxicity to MDBK cells, Hep-2, and MDCK cells, and possesses antiviral activity against PV-1.
- Mild to moderate antifungal activity against some fungi.
- Low or no activity against bacteria and yeast.
- Low cytotoxicity to MDBK cells, Hep-2, and MDCK cells.
- Antiviral activity against PV-1.
Gold Biotechnology Inc IPTG 300 g
IPTG is an analog of galactose that is non-metabolizable and inactivates the lac repressor to induce synthesis of -galactosidase in E coli The expression of cloned genes under the control of the lac operon is induced by IPTG It is also a substrate for thigalactoside transacetylase and has been reported to induce penicillinase in bacteria
Research Products International Corp D-(+)-Trehalose Dihydrate, 5 Grams
- CAS Number: 6138-23-4
- Molecular Formula: C12H22O11 • 2H2O
- Molecular Weight: 378.3
Sigma Aldrich Fine Chemicals Biosciences Carminic acid | 1260-17-9 | MFCD00167028 | 1G
Carminic acid | Purity: >=90% (HPLC) | Mol Wt: 492.39 | 1260-17-9 | MFCD00167028 | 1G
![Research Products International Corp X-GAL [5-Bromo-4-chloro-3-indolyl-B-D-galactoside], 10 Grams](https://assets.fishersci.com/TFS-Assets/CCG/product-images/VN00006095-B71800-10.0.JPG-250.jpg)
Research Products International Corp X-GAL [5-Bromo-4-chloro-3-indolyl-B-D-galactoside], 10 Grams
Chromogenic substrate of β-Galactosidase used in combination with IPTG for detection of β-Galactosidase activity in bacterial colonies. X-GAL is cleaved at the B1-4 bond between galactose and the 5-Bromo-4-chloro-3-indolyl portion of X-GAL by β-Galactosidase via hydrolysis. The cleavage of X-GAL results in the production of a water insoluble blue dichloro-dibromo-indigo precipitate. In cloning strategies with vectors such as Lambda-11, M13mp18 and 19, pUC18 and 19, pUR222 the E. coli lacZ gene is transformed to lac+ cells. After transformation the cells show β-Galactosidase activity in the presence of media containing X-GAL and IPTG. The insertion of a DNA fragment into the cloning sites of the lacZ gene results in the disruption of β-Galactosidase activity leading to the appearance of white colonies. Non-recombinant cells produce a blue indigo dye.
Water Content: 0.05% (K. Fisher)
Protect from light and moisture
Sigma Aldrich Fine Chemicals Biosciences Collagenase D from Clostri
Collagenase D is prepared from Clostridium histolyticum cultures by filtration ammonium sulfate precipitation dialysis and lyophilization.
![Alkali Scientific NPG [p Nitrophenyl β D glucuronide], 1 G](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000661479.jpg-250.jpg)
Alkali Scientific NPG [p Nitrophenyl β D glucuronide], 1 G
NPG (p Nitrophenyl β D Glucuronide), available in a 1g pack, is an essential reagent used for detecting glucuronidase activity in biochemical and microbiological research. The substrate, upon hydrolysis by glucuronidase enzymes, produces a yellow-colored compound that can be easily quantified, making it a critical tool for enzyme assays. NPG is commonly employed in research related to drug metabolism, liver function, and glucuronide conjugation. The 1g pack provides a larger supply for extended assays, making it ideal for high-throughput testing. This reagent is widely used in pharmaceutical and clinical laboratories for glucuronidase assays and enzyme activity studies.
Alkali Scientific p Nitrophenyl a L fucopyranoside, 1 G
p-Nitrophenyl α-L-fucopyranoside, available in 1g quantity, is a specialized chemical reagent used in the analysis of carbohydrate structures and enzyme activity. This compound is primarily employed in enzyme assays to study α-L-fucosidases, enzymes responsible for the hydrolysis of fucosidic linkages in glycoproteins. It serves as a substrate that undergoes hydrolysis, producing p-nitrophenol, which can be easily quantified spectrophotometrically. This reagent is crucial for researching metabolic pathways involving fucose, an important sugar in biological processes such as cell recognition and immune response.
Alkali Scientific D (+) Trehalose Dihydrate, 50 G
D (+) Trehalose Dihydrate, 50g, is a carbohydrate stabilizing agent used to protect cells, proteins, and enzymes during environmental stress such as dehydration, freezing, and oxidative conditions. Trehalose stabilizes cellular structures, preserves protein functions, and protects sensitive biological molecules from degradation. This 50g bottle is ideal for smaller-scale research projects and biochemical applications where cell protection and sample preservation are critical. It is commonly used in fields such as cryobiology, drug formulation, and the preservation of enzymes and microbial cultures during long-term storage, providing a reliable solution for stabilizing biological samples.
Alkali Scientific D (+) Trehalose Dihydrate, 1 Kg
D (+) Trehalose Dihydrate, 1kg, is a stabilizing agent and carbohydrate compound used primarily for cell protection in laboratory applications. It is widely utilized to preserve the structural integrity of cells and proteins during freezing, dehydration, and other harsh environmental conditions. Trehalose helps to protect cellular membranes, enzymes, and nucleic acids from oxidative damage, making it essential in long-term storage of biological samples, particularly in cryopreservation and freeze-drying applications. This bulk quantity is ideal for large-scale laboratory processes or industrial applications where stable preservation of biological materials is crucial.