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5,7,3′,4′,5′-Pentamethoxyflavone

$120$150

  • Brand : BIOFRON

  • Catalogue Number : BD-P0477

  • Specification : 98.0%(HPLC)

  • CAS number : 53350-26-8

  • PUBCHEM ID : 493376

Quantity
Bulk Order?

Catalogue Number

BD-P0477

Analysis Method

HPLC,NMR,MS

Specification

98.0%(HPLC)

Storage

2-8°C

Molecular Weight

Appearance

Powder

Botanical Source

Structure Type

Flavonoids

Category

SMILES

COC1=CC2=C(C(=C1)OC)C(=O)C=C(O2)C3=CC(=C(C(=C3)OC)OC)OC

Synonyms

5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)chromen-4-one

IUPAC Name

5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)chromen-4-one

Applications

Density

1.244g/cm3

Solubility

Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.

Flash Point

243.5ºC

Boiling Point

554.4ºC at 760mmHg

Melting Point

198-200ºC

InChl

InChI=1S/C20H20O7/c1-22-12-8-15(23-2)19-13(21)10-14(27-16(19)9-12)11-6-17(24-3)20(26-5)18(7-11)25-4/h6-10H,1-5H3

InChl Key

GIKVSFNAEBQLGB-UHFFFAOYSA-N

WGK Germany

RID/ADR

HS Code Reference

2907190000

Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:53350-26-8) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

No Technical Documents Available For This Product.

PMID

30905509

Abstract

Developing and adult tissues use different cis-regulatory elements. Although DNA at some decommissioned embryonic enhancers is hypomethylated in adult cells, it is unknown whether this putative epigenetic memory is complete and recoverable. We find that in adult mouse cells, hypomethylated CpG dinucleotides preserve a nearly complete archive of tissue-specific developmental enhancers. Sites that carry the active histone mark H3K4me1, and are therefore considered ‘primed’, are mainly cis-elements that act late in organogenesis. In contrast, sites decommissioned early in development retain hypomethylated DNA as a singular property. In adult intestinal and blood cells, sustained absence of Polycomb Repressive Complex 2 indirectly reactivates most -and only- hypomethylated developmental enhancers. Embryonic and fetal transcriptional programs re-emerge as a result, in reverse chronology to cis-element inactivation during development. Thus, hypomethylated DNA in adult cells preserves a ‘fossil record’ of tissue-specific developmental enhancers, stably marking decommissioned sites and enabling recovery of this epigenetic memory.

Title

Extensive recovery of embryonic enhancer and gene memory stored in hypomethylated enhancer DNA

Author

Unmesh Jadhav,1,2 Alessia Cavazza,1,2 Kushal K. Banerjee,1,2 Huafeng Xie,3 Nicholas K. O’Neill,1 Veronica Saenz-Vash,4 Zachary Herbert,5 Shariq Madha,1 Stuart H. Orkin,3,6,7 Huili Zhai,4 and Ramesh A. Shivdasani1,2,7,*

Publish date

2020 May 2.

PMID

26836199

Abstract

Background
Nausea and vomiting remain a problem for children undergoing treatment for malignancies despite new antiemetic therapies. Optimising antiemetic regimens could improve quality of life by reducing nausea, vomiting, and associated clinical problems. This is an update of the original systematic review.

Objectives
To assess the effectiveness and adverse events of pharmacological interventions in controlling anticipatory, acute, and delayed nausea and vomiting in children and young people (aged less than 18 years) about to receive or receiving chemotherapy.

Search methods
Searches included the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, LILACS, PsycINFO, conference proceedings of the American Society of Clinical Oncology, International Society of Paediatric Oncology, Multinational Association of Supportive Care in Cancer, and ISI Science and Technology Proceedings Index from incept to December 16, 2014, and trial registries from their earliest records to December 2014. We examined references of systematic reviews and contacted trialists for information on further studies. We also screened the reference lists of included studies.

Selection criteria
Two review authors independently screened abstracts in order to identify randomised controlled trials (RCTs) that compared a pharmacological antiemetic, cannabinoid, or benzodiazepine with placebo or any alternative active intervention in children and young people (less than 18 years) with a diagnosis of cancer who were to receive chemotherapy.

Data collection and analysis
Two review authors independently extracted outcome and quality data from each RCT. When appropriate, we undertook meta‐analysis.

Main results
We included 34 studies that examined a range of different antiemetics, used different doses and comparators, and reported a variety of outcomes. The quality and quantity of included studies limited the exploration of heterogeneity to narrative approaches only.

The majority of quantitative data related to the complete control of acute vomiting (27 studies). Adverse events were reported in 29 studies and nausea outcomes in 16 studies.

Two studies assessed the addition of dexamethasone to 5‐HT3 antagonists for complete control of vomiting (pooled risk ratio (RR) 2.03; 95% confidence interval (CI) 1.35 to 3.04). Three studies compared granisetron 20 mcg/kg with 40 mcg/kg for complete control of vomiting (pooled RR 0.93; 95% CI 0.80 to 1.07). Three studies compared granisetron with ondansetron for complete control of acute nausea (pooled RR 1.05; 95% CI 0.94 to 1.17; 2 studies), acute vomiting (pooled RR 2.26; 95% CI 2.04 to 2.51; 3 studies), delayed nausea (pooled RR 1.13; 95% CI 0.93 to 1.38; 2 studies), and delayed vomiting (pooled RR 1.13; 95% CI 0.98 to 1.29; 2 studies). No other pooled analyses were possible.

Narrative synthesis suggests that 5‐HT3 antagonists are more effective than older antiemetic agents, even when these agents are combined with a steroid. Cannabinoids are probably effective but produce frequent side effects.

Authors’ conclusions
Our overall knowledge of the most effective antiemetics to prevent chemotherapy‐induced nausea and vomiting in childhood is incomplete. Future research should be undertaken in consultation with children, young people, and families that have experienced chemotherapy and should make use of validated, age‐appropriate measures. This review suggests that 5‐HT3 antagonists are effective in patients who are to receive emetogenic chemotherapy, with granisetron or palonosetron possibly better than ondansetron. Adding dexamethasone improves control of vomiting, although the risk‐benefit profile of adjunctive steroid remains uncertain

Title

Antiemetic medication for prevention and treatment of chemotherapy‐induced nausea and vomiting in childhood

Author

Monitoring Editor: Robert S Phillips,corresponding author Amanda J Friend, Faith Gibson, Elizabeth Houghton, Shireen Gopaul, Jean V Craig, Barry Pizer, and Cochrane Childhood Cancer Group

Publish date

2016 Feb;

PMID

31723324

Abstract

Three new species and one subspecies of the genus Amynthas are described from Guangxi Zhuang Autonomous Region, China: The new species are: Amynthas maximus Qiu & Dong, sp. nov. and Amynthas tortuosus Qiu & Dong, sp. nov., and Amynthas shengtangmontis Dong & Jiang, sp. nov., the subspecies is Amynthas shengtangmontis minusculussubsp. nov. All have four pairs of spermathecal pores in 5/6-8/9, which indicates that they should belong to the corticis-group. Their morphological characteristics are compared to other similar species in the corticis-group from China and other Asian countries, such as Amynthas pulvinus Sun & Jiang, 2013, Amynthas homosetus (Chen, 1938), Amynthas corticis (Kinberg, 1867), Amynthas dorsualis Sun & Qiu, 2013, and Amynthas carnosus (Goto & Hatai, 1899). In addition, the results presented are confirmed by the pairwise comparison of COI barcode sequences. The pairwise distances between each new species and the other eighteen corticis-group species are greater than 14.7% on average. Furthermore, the pairwise distance between A. shengtangmontis shengtangmontis and A. shengtangmontis minusculus is 10.7-11.4%.

KEYWORDS

Earthworm, cytochrome c oxidase subunit I gene, new species

Title

Three new species and one subspecies of the Amynthas corticis-group from Guangxi Zhuang Autonomous Region, China (Oligochaeta, Megascolecidae)

Author

Yan Dong,1 Michelle Man Suet Law,2 JiBao Jiang,1 and JiangPing Qiucorresponding author1

Publish date

2019;