Ascochin

Ascochin

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Category Mycotoxins
Catalog number BBF-04670
CAS 935699-58-4
Molecular Weight 234.2
Molecular Formula C12H10O5
Purity >95% by HPLC

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Description

Ascochin is a fungal metabolite found in Ascochyta, which has antifungal, antibacterial and phytotoxic activities.

Specification

Synonyms (S)-(+)-Ascochin
Storage Store at -20°C
IUPAC Name (4S)-6,8-dihydroxy-4-methyl-3-methylidene-1-oxo-4H-isochromene-5-carbaldehyde
Canonical SMILES CC1C(=C)OC(=O)C2=C(C=C(C(=C12)C=O)O)O
InChI InChI=1S/C12H10O5/c1-5-6(2)17-12(16)11-9(15)3-8(14)7(4-13)10(5)11/h3-5,14-15H,2H2,1H3/t5-/m1/s1
InChI Key XLKIJHXPWYIGIM-RXMQYKEDSA-N

Properties

Appearance White to Off-white Solid
Antibiotic Activity Spectrum fungi
Boiling Point 424.0±45.0°C (Predicted)
Density 1.46±0.1 g/cm3 (Predicted)
Solubility Soluble in methanol, DMSO, dichloromethane

Reference Reading

1. 2022 French Society for Rheumatology (SFR) recommendations on the everyday management of patients with spondyloarthritis, including psoriatic arthritis
Daniel Wendling, Sophie Hecquet, Olivier Fogel, et al. Joint Bone Spine. 2022 May;89(3):105344. doi: 10.1016/j.jbspin.2022.105344. Epub 2022 Jan 14.
Objective: Update the French Society for Rheumatology (SFR) recommendations on the everyday management of patients with spondyloarthritis, including psoriatic arthritis. Methods: Following standardized procedures, a systematic literature review was done by four supervised rheumatology residents based on questions defined by a task force of 16 attending rheumatologists. The findings were reviewed during three working meetings that culminated in each recommendation receiving a grade and the level of agreement among experts being determined. Results: Five general principles and 15 recommendations were developed. They take into account pharmacological and non-pharmacological measures along with treatment methods based on the dominant phenotype present (axial, articular, enthesitis/dactylitis) and the extra-articular manifestations (psoriasis, inflammatory bowel disease, uveitis). NSAIDs are the first-line pharmacological treatment in the various presentations. Conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) are not indicated in the axial and isolated entheseal forms. If the response to conventional treatment is not adequate, targeted therapies (biologics, synthetics) should be considered; the indications depend on the clinical phenotype and presence of extra-articular manifestations. Conclusion: This update incorporates recent data (published since the prior update in 2018) and the predominant clinical phenotype concept. It aims to help physicians with the everyday management of patients affected by spondyloarthritis, including psoriatic arthritis.
2. Emergency vs Delayed Coronary Angiogram in Survivors of Out-of-Hospital Cardiac Arrest: Results of the Randomized, Multicentric EMERGE Trial
Caroline Hauw-Berlemont, Lionel Lamhaut, Jean-Luc Diehl, et al. JAMA Cardiol. 2022 Jul 1;7(7):700-707. doi: 10.1001/jamacardio.2022.1416.
Importance: Although an emergency coronary angiogram (CAG) is recommended for patients who experience an out-of-hospital cardiac arrest (OHCA) with ST-segment elevation on the postresuscitation electrocardiogram (ECG), this strategy is still debated in patients without ST-segment elevation. Objective: To assess the 180-day survival rate with Cerebral Performance Category (CPC) 1 or 2 of patients who experience an OHCA without ST-segment elevation on ECG and undergo emergency CAG vs delayed CAG. Design, setting, and participants: The Emergency vs Delayed Coronary Angiogram in Survivors of Out-of-Hospital Cardiac Arrest (EMERGE) trial randomly assigned survivors of an OHCA without ST-segment elevation on ECG to either emergency or delayed (48 to 96 hours) CAG in 22 French centers. The trial took place from January 19, 2017, to November 23, 2020. Data were analyzed from November 24, 2020, to July 30, 2021. Main outcomes and measures: The primary outcome was the 180-day survival rate with CPC of 2 or less. The secondary end points were occurrence of shock, ventricular tachycardia, and/or fibrillation within 48 hours, change in left ventricular ejection fraction between baseline and 180 days, CPC scale at intensive care unit discharge and day 90, survival rate, and hospital length of stay. Results: A total of 279 patients (mean [SD] age, 64.7 [14.6] years; 195 men [69.9%]) were enrolled, with 141 (50.5%) in the emergency CAG group and 138 (49.5%) in the delayed CAG group. The study was underpowered. The mean (SD) time delay between randomization and CAG was 0.6 (3.7) hours in the emergency CAG group and 55.1 (37.2) hours in the delayed CAG group. The 180-day survival rates among patients with a CPC of 2 or less were 34.1% (47 of 141) in the emergency CAG group and 30.7% (42 of 138) in the delayed CAG group (hazard ratio [HR], 0.87; 95% CI, 0.65-1.15; P = .32). There was no difference in the overall survival rate at 180 days (emergency CAG, 36.2% [51 of 141] vs delayed CAG, 33.3% [46 of 138]; HR, 0.86; 95% CI, 0.64-1.15; P = .31) and in secondary outcomes between the 2 groups. Conclusions and relevance: In this randomized clinical trial, for patients who experience an OHCA without ST-segment elevation on ECG, a strategy of emergency CAG was not better than a strategy of delayed CAG with respect to 180-day survival rate and minimal neurologic sequelae. Trial registration: ClinicalTrials.gov Identifier: NCT02876458.
3. Vertebroplasty for osteoporotic vertebral fracture
Christian Roux, Bernard Cortet, Valérie Bousson, Thierry Thomas RMD Open. 2021 Jun;7(2):e001655. doi: 10.1136/rmdopen-2021-001655.
Appropriate care of patients with a recent painful osteoporotic vertebral fracture (VF) requires immobilisation, analgesics and spinal orthoses. Some VFs are however responsible for disabling pain and prolonged bed rest. In this context, vertebroplasty techniques have been proposed with a large benefit in case series and open-label randomised studies, but lack efficacy in three among four double-blind randomised studies. The objectives of the treatment of a recent painful VF are to relieve pain and to preserve mechanical conditions. With this in mind, we report an experts' opinion paper on the indications for vertebroplasty and research agenda for clinical studies.

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Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2

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Tip: Chemical formula is case sensitive. C22H30N4O c22h30n40
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