Category: 10510-54-0

Liu, Xianhu published the artcileQuantum-size-effect accommodation of gold clusters with altered fluorescence of dyes, Application of 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, the publication is RSC Advances (2015), 5(39), 30610-30616, database is CAplus.

We have synthesized monodispersed Au₂₅ nanoclusters (NCs) stabilized with eco-friendly glutathione and report here an insight into their interactions with dye mols. In the presence of such gold NCs, consistent fluorescence quenching was observed for all the dye mols. that we examined in this study regardless of their maximum emission wavelengths. The steady-state and time-resolved spectroscopic results demonstrate that the weakened luminance is associated with the protective ligand pertaining to a static quenching mechanism. Having expounded this issue, we further employed proper laser irradiation enabling dissociation of Au₂₅(SG)₁₈ so as to attain a transformation of nonplasmonic NCs into plasmonic gold nanoparticles (NPs) via photo-assisted aggregation of the dissociated gold clusters. As a result, emission enhancement for these dyes was observed, which is largely attributed to the local electromagnetic field enhancement of gold NPs. The alternation of fluorescence quenching to emission enhancement reflects an accommodation of quantum size effects upon the ligand-stabilized gold clusters.

RSC Advances published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Application of 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Cook, A. Gilbert published the artcileThe blue bottle experiment revisited. How Blue? How Sweet?, Computed Properties of 10510-54-0, the publication is Journal of Chemical Education (1994), 71(2), 160-1, database is CAplus.

The “Blue Bottle” experiment was first popularized by Campbell. The reaction consists of a flask about half full of a colorless liquid that, when shaken, turns blue. When left to stand the liquid turns colorless again. The cyclic process – being shaken, turning blue, being left to stand, and turning colorless – can be repeated many times. By making a series of guided observations with this simple but colorful system, the student can determine a rate law and a plausible mechanism for the reaction without ever knowing the contents of the flask. The activation energy of the reaction can also be measured by making observations at various temperatures This popular experiment has been carried out by general chem. students at Valparaiso University since 1963 with great success.

Journal of Chemical Education published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Computed Properties of 10510-54-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Solomon, Michael published the artcileA coupled fluorometric rate assay for pyruvate dehydrogenase in cultured human fibroblasts, Category: catalysis-chemistry, the publication is Analytical Biochemistry (1984), 141(2), 337-43, database is CAplus and MEDLINE.

A method for measuring the activity of the pyruvate dehydrogenase complex (PDC) by coupling acetyl-CoA production to acetylation of a fluorescent dye is described. Acetylation of cresyl violet acetate by pigeon liver acetyltransferase results in a shift of its fluorescence spectrum from ¦Ë_ex?_max = 575, ¦Ë_em?_max = 620 nm to ¦Ë_ex?_max = 475, ¦Ë_em?_max = 575 nm (where ¦Ë = wavelength and ex and em = excitation and emission, resp.). The rate of appearance of acetylated dye was followed fluorometrically and was proportional to PDC activity in extracts of cultured human fibroblasts. The assay showed appropriate substrate and cofactor dependence and had a working range between 0.04 and 70 milliunits. It is 10-fold more sensitive than the spectrophotometric assay on which it is based (working range 0.4-31 milliunits) and is equally convenient. Unactivated PDC activity in fibroblast extracts was 0.75 (0.60-0.92) milliunits/mg protein (mean and range for 6 cell lines).

Analytical Biochemistry published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C17H20ClN3, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Augulis, Vaclovas published the artcileSupravital staining and fixation of brain and spinal cord by intravascular perfusion, Related Products of catalysis-chemistry, the publication is Stain Technology (1971), 46(4), 183-90, database is CAplus and MEDLINE.

Forty single and 13 combinations of dyes were tested for concomitant supravital staining and fixation of brain and spinal cord of rats, cats, and squirrel monkeys by intravascular perfusion in 3 steps: (1) 60 or 80 ml of physiol. saline containing 40 mg/100 ml of NaNO2 as a vasodilator; (2) 250 or 550 ml of stain-fixative solution consisting of either: A-2 parts of dye solution in a concentration from 0.001% to 0.05% dissolved in saline containing 40 mg/100 ml of NaNO2 and 1 part undiluted formalin; or B-2 parts of dye solution in a concentration from 0.001% to 0.05% dissolved in distilled water acidified with 1.5 ml of glacial HOAc/100 ml of water, and 1 part undiluted formalin; and (3) 100 or 150 ml of 6% dextrose in distilled water. Complete staining and fixation was accomplished in 53 min for rats and 41 min for cats and monkeys. Brains and spinal cord were frozen, sectioned, and the cut surfaces of the frozen tissue were photographed similar to the procedure described by Gasteiger, et al. (1969).

Stain Technology published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Li, Lihong published the artcileSensitive Fluorescence Probe with Long Analytical Wavelengths for ¦Ã-Glutamyl Transpeptidase Detection in Human Serum and Living Cells, Application In Synthesis of 10510-54-0, the publication is Analytical Chemistry (Washington, DC, United States) (2015), 87(16), 8353-8359, database is CAplus and MEDLINE.

A new sensitive fluorescent probe (I) with long anal. wavelengths for ¦Ã-glutamyl transpeptidase (GGT) assay has been developed by incorporating the ¦Ã-glutamyl group as a recognition unit into the fluorophore of cresyl violet (CV). The detection mechanism of I is based on the GGT-catalyzed cleavage of the ¦Ã-glutamyl group, followed by the release of CV, which leads to a distinct color change from light yellow to pink and a large fluorescence enhancement at 615 nm (¦Ë_ex = 585 nm). Under the optimized conditions, the fluorescence intensity of I is directly proportional to the activity of GGT at 1-50 U/L with a detection limit of 5.6 mU/L. By virtue of its high sensitivity and long anal. wavelengths, I has been used to directly determine GGT in human serum samples from both healthy people and liver cancer patients, and the obtained results accord well with those acquired by com. GGT fluorometric assay kit. I has also been employed to image endogenous GGT in living cells. Notably, with the authors’ probe, the expression level of GGT in HepG2 cells under the action of sodium butyrate (an anticancer drug) was studied by fluorescence confocal microscopy, revealing that sodium butyrate can induce the upregulation of GGT in HepG2 cells in a dose- and time-dependent manner. This behavior of sodium butyrate has further been confirmed by lysate assay and inhibitor experiment I is rather simple and may find a wide use in the determination of GGT in clin. and biol. samples.

Analytical Chemistry (Washington, DC, United States) published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Application In Synthesis of 10510-54-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gong, Qiuyu published the artcileUltrasensitive Fluorescent Probes Reveal an Adverse Action of Dipeptide Peptidase IV and Fibroblast Activation Protein during Proliferation of Cancer Cells, Recommanded Product: 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, the publication is Analytical Chemistry (Washington, DC, United States) (2016), 88(16), 8309-8314, database is CAplus and MEDLINE.

Dipeptide peptidase IV (DPPIV) and fibroblast activation protein (FAP) are isoenzymes. Evidence shows that DPPIV is related to antitumor immunity, and FAP may be a drug target in cancer therapy, making it seem that the two enzymes might have a synergistic role during the proliferation of cancer cells. Surprisingly, herein, the authors find an adverse action of DPPIV and FAP in the proliferation process by analyzing their changes with two tailor-made ultrasensitive fluorescent probes. First, the up-regulation of DPPIV and down-regulation of FAP in cancer cells under the stimulation of genistein are detected. Then, the authors find that MGC803 cells with a higher FAP but lower DPPIV level than SGC7901 cells exhibit a faster proliferation rate. Importantly, inhibiting the DPPIV expression with siRNA increases the proliferation rate of MGC803 cells, whereas the FAP inhibition decreases the rate. These findings suggest that the two enzymes play an adverse role during the proliferation of cancer cells, which provides the authors a new viewpoint for cancer studies.

Analytical Chemistry (Washington, DC, United States) published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Recommanded Product: 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wang, Lihua published the artcileInclusion of guest materials in aqueous coordination network shells spontaneously generated by reacting 2,5-dimercapto-1,3,4-thiadiazole with nanoscale metallic silver, Recommanded Product: 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, the publication is RSC Advances (2014), 4(65), 34294-34302, database is CAplus.

Noble metal nanoparticles (NPs) are spontaneously enfolded by aqueous coordination networks generated by reacting 2,5-dimercapto-1,3,4-thiadiazole (DMcT) with Ag nanostructures in zero-oxidation state, and finally form novel hollow Au@Ag@infinite coordination polymers core-shell nanostructures (Au@Ag@void@ICPs). In this synthesis, DMcT mols. not only act as the bridging ligands but also directly oxidize Ag⁰ to Ag⁺ ions for the formation of amorphous DMcT-Ag ICPs. And, the sizes of the shell and void of Au@Ag@void@ICPs can be facilely tuned by modulating the amount of DMcT and the size ratio of Au@Ag NPs, resp. Due to the high structural tailorability of DMcT-Ag ICPs, multi-encapsulation of Au@Ag NPs with either small organic mols. or biol. macromols. (e.g., enzymes) can be achieved to fabricate multi-functional core-shell nanostructures. A case in point is that a highly sensitive biosensor of H₂O₂ with a wider detection window was constructed based on the prepared metal NPs-ICPs-enzyme composites and resonance Raman scattering. This study provides not only a new template for tailoring hollow core-shell nanomaterials but also a versatile platform for chem. (bio) sensing.

RSC Advances published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is 0, Recommanded Product: 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Rhead, W. J. published the artcileSelenium catalyzed reduction of methylene blue by thiols, COA of Formula: C18H15N3O3, the publication is Bioinorganic Chemistry (1974), 3(3), 225-42, database is CAplus and MEDLINE.

The reduction of methylene blue [61-73-4], of other reducible dyes, as well as of riboflavine [83-88-5], hemin [16009-13-5], and of vitamin B12a [13422-51-0] by thiols was catalyzed by ¦ÌM amounts of Se. The reduction of methylene blue was investigated in greater detail and exhibited a complicated dependence on the pH and the thiol concentration Alkylating agents, CN-, as well as Cd+2 or Hg+2 were inhibitory, whereas Cu2+ or Ag+ had stimulatory effects. Dithiols were more effective reducing agents than monothiols. The catalytic effects of Se in these reactions may parallel some of the functions of Se in vivo.

Bioinorganic Chemistry published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, COA of Formula: C18H15N3O3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sanders, Charles R. II published the artcileOrientational behavior of phosphatidylcholine bilayers in the presence of aromatic amphiphiles and a magnetic field, Safety of 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, the publication is Biophysical Journal (1993), 64(4), 1069-80, database is CAplus and MEDLINE.

A number of aromatic-containing additives which can influence the orientation of fragments of lipid bilayer membranes by a magnetic field have been investigated. Two properties of these additives prove important: (1) sufficient detergency to facilitate reorganization of bilayer components and (2) sufficient anisotropy in magnetic susceptibility to alter the preferred direction of fragment orientation. Triton X-100 is identified as effective in terms of facilitating magnetic field ordering of bilayer fragments but does not alter the preferred direction of orientation. A combination of the detergent CHAPSO (3-[(3-cholamidopropyl)-dimethylammonio]-1-propane sulfonate) and the aromatic alc. 1-naphthol facilitates both ordering and alters the preferred direction of bilayer orientation. As mixtures of dimyristoylphosphatidylcholine (DMPC) and CHAPSO, which orient with bilayer normals perpendicular to the magnetic field, were titrated with 1-naphthol, the assemblies underwent transitions, first to random orientation, and then to an orientation with bilayer normals parallel to the field. Based on temperature-induced phase transitions and the extent of motional averaging of the ³¹P shielding tensor of the DMPC headgroup, the DMPC in these oriented samples appears to maintain a bilayer morphol. during transitions. The insight provided in this study regarding factors which influence fragment stability and orientation lays the groundwork for the design of improved field-oriented media for spectroscopic investigation of membrane components.

Biophysical Journal published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Safety of 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Lunn, George published the artcileDecontamination of aqueous solutions of biological stains, Quality Control of 10510-54-0, the publication is Biotechnic & Histochemistry (1991), 66(6), 307-15, database is CAplus and MEDLINE.

Aqueous solutions of a number of biol. stains were completely decontaminated to the limit of detection using Amberlite resins. Amberlite XAD-16 was the most generally applicable resin but Amberlite XAD-2, Amberlite XAD-4, and Amberlite XAD-7 could be used to decontaminate some solutions Solutions of Acridine Orange, Alcian Blue 8GX, Alizarine Red S, azure A, azure B, congo red, cresyl violet acetate, crystal violet, eosin B, erythrosin B, ethidium bromide, Janus Green B, methylene blue, Neutral Red, nigrosin, orcein, propidium iodide, Rose Bengal, safranine O, Toluidine Blue O, and trypan blue could be completely decontaminated to the limit of detection and solutions of eosin Y and Giemsa stain were decontaminated to very low levels (<0.02 ppm) using Amberlite XAD-16. Fourteen of the 23 stains tested were mutagenic to Salmonella?typhimurium. None of the completely decontaminated solutions were mutagenic.

Biotechnic & Histochemistry published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C18H15N3O3, Quality Control of 10510-54-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia