AB 5046 A
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| Category | Others |
| Catalog number | BBF-03191 |
| CAS | 154037-62-4 |
| Molecular Weight | 198.22 |
| Molecular Formula | C10H14O4 |
| Purity | >98% |
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Description
AB 5046 A is a substance produced by Nodulisporium AB5046 that causes plant chlorosis. It has the activity of inducing chlorosis of monocotyledonous and dicotyledonous plants.
Specification
| Synonyms | 2-Cyclohexen-1-one, 3,5-dihydroxy-2-(1-oxobutyl)-, (+/-)-; (+/-)-3,5-Dihydroxy-2-(1-oxobutyl)-2-cyclohexen-1-one |
| Storage | Store at -20°C |
| IUPAC Name | 5-hydroxy-2-(1-hydroxybutylidene)cyclohexane-1,3-dione |
| Canonical SMILES | CCCC(=C1C(=O)CC(CC1=O)O)O |
| InChI | InChI=1S/C10H14O4/c1-2-3-7(12)10-8(13)4-6(11)5-9(10)14/h6,11-12H,2-5H2,1H3 |
| InChI Key | RXVLEEDFHBRMGB-UHFFFAOYSA-N |
Properties
| Boiling Point | 373°C at 760 mmHg |
| Density | 1.301 g/cm3 |
| Solubility | Soluble in DMSO |
Reference Reading
1. Brain Abnormalities and Epilepsy in Patients with Parry-Romberg Syndrome
C De la Garza-Ramos, A Jain, S A Montazeri, L Okromelidze, R McGeary, A A Bhatt, S J S Sandhu, S S Grewal, A Feyissa, J I Sirven, A L Ritaccio, W O Tatum, V Gupta, E H Middlebrooks AJNR Am J Neuroradiol. 2022 Jun;43(6):850-856. doi: 10.3174/ajnr.A7517.
Background and purpose: Parry-Romberg syndrome is a rare disorder characterized by progressive hemifacial atrophy. Concomitant brain abnormalities have been reported, frequently resulting in epilepsy, but the frequency and spectrum of brain involvement are not well-established. This study aimed to characterize brain abnormalities in Parry-Romberg syndrome and their association with epilepsy. Materials and methods: This is a single-center, retrospective review of patients with a clinical diagnosis of Parry-Romberg syndrome and brain MR imaging. The degree of unilateral hemispheric atrophy, white matter disease, microhemorrhage, and leptomeningeal enhancement was graded as none, mild, moderate, or severe. Other abnormalities were qualitatively reported. Findings were considered potentially Parry-Romberg syndrome-related when occurring asymmetrically on the side affected by Parry-Romberg syndrome. Results: Of 80 patients, 48 (60%) had brain abnormalities identified on MR imaging, with 26 (32%) having abnormalities localized to the side of the hemifacial atrophy. Sixteen (20%) had epilepsy. MR imaging brain abnormalities were more common in the epilepsy group (100% versus 48%, P < .001) and were more frequently present ipsilateral to the hemifacial atrophy in patients with epilepsy (81% versus 20%, P < .001). Asymmetric white matter disease was the predominant finding in patients with (88%) and without (23%) epilepsy. White matter disease and hemispheric atrophy had a higher frequency and severity in patients with epilepsy (P < .001). Microhemorrhage was also more frequent in the epilepsy group (P = .015). Conclusions: Ipsilateral MR imaging brain abnormalities are common in patients with Parry-Romberg syndrome, with a higher frequency and greater severity in those with epilepsy. The most common findings in both groups are white matter disease and hemispheric atrophy, both presenting with greater severity in patients with epilepsy.
2. Advanced Practice Providers as Leaders of a Rapid Response Team: A Prospective Cohort Study
Herman G Kreeftenberg, Ashley J R de Bie, Jeroen T Aarts, Alexander J G H Bindels, Nardo J M van der Meer, Peter H J van der Voort Healthcare (Basel). 2022 Oct 25;10(11):2122. doi: 10.3390/healthcare10112122.
In view of the shortage of medical staff, the quality and continuity of care may be improved by employing advanced practice providers (APPs). This study aims to assess the quality of these APPs in critical care. In a large teaching hospital, rapid response team (RRT) interventions led by APPs were assessed by independent observers and intensivists and compared to those led by medical residents MRs. In addition to mortality, the MAELOR tool (assessment of RRT intervention), time from RRT call until arrival at the scene and time until completion of clinical investigations were assessed. Process outcomes were assessed with the crisis management skills checklist, the Ottawa global rating scale and the Mayo high-performance teamwork scale. The intensivists assessed performance with the handoff CEX recipient scale. Mortality, MAELOR tool, time until arrival and clinical investigation in both groups were the same. Process outcomes and performance observer scores were also equal. The CEX recipient scores, however, showed differences between MRs and APPs that increased with experience. Experienced APPs had significantly better situational awareness, better organization, better evaluations and better judgment than MRs with equal experience (p < 0.05). This study shows that APPs perform well in leading an RRT and may provide added quality over a resident. RRTs should seriously consider the deployment of APPs instead of junior clinicians.
3. Dominant role of OH- and Ti3+ defects on the electronic structure of TiO2 thin films for water splitting
Maria Isabel Mendoza Diaz, Andrea Balocchi, Kolade Oyekan, Kui Tan, William G Vandenberghe, Alain Esteve, Carole Rossi Dalton Trans. 2022 Oct 18;51(40):15300-15311. doi: 10.1039/d2dt01871c.
Anatase/rutile constituting TiO2 thin films were prepared by sputter deposition, and the influence of the post-annealing step with a narrow window at 200 °C revealed a gaining factor of 5 in H2 production. An in-depth analysis of the photocatalytic performance revealed the dominant role of intermediate states rather than the heterocrystalline nature and the mesoscale structure. Structural, chemical and optical investigations based on scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, UV-visible spectroscopy and photoluminescence supported by ab initio calculation correlated the H2 production with the dual presence of OH- and Ti3+ defects in the form of titanium interstitial atoms. In addition, steady-state photoluminescence measurements determined the chemically active role of ethanol, commonly used as a hole scavenger, in inducing deep hole traps upon dissociation on the surface. These results give new directions for the design of TiO2 based photocatalytic systems for light-driven H2 production through water splitting, guided by a detailed description of defects present on the electronic structure and their chemical identification.
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Bio Calculators
* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2
* Total Molecular Weight:
g/mol
Tip: Chemical formula is case sensitive. C22H30N4O √ c22h30n40 ╳
