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Melittoside

$672

  • Brand : BIOFRON

  • Catalogue Number : BD-P0925

  • Specification : 98.0%(HPLC&TLC)

  • CAS number : 19467-03-9

  • Formula : C21H32O15

  • Molecular Weight : 524.47

  • PUBCHEM ID : 11968737

  • Volume : 25mg

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Catalogue Number

BD-P0925

Analysis Method

HPLC,NMR,MS

Specification

98.0%(HPLC&TLC)

Storage

-20℃

Molecular Weight

524.47

Appearance

White crystalline powder

Botanical Source

Rehmannia glutinosa (Gaetn.) Libosch. ex Fisch. et Mey.

Structure Type

Monoterpenoids

Category

Standards;Natural Pytochemical;API

SMILES

C1=COC(C2C1(C(C=C2CO)O)OC3C(C(C(C(O3)CO)O)O)O)OC4C(C(C(C(O4)CO)O)O)O

Synonyms

(1S,4aS,5R,7aR)-1-(β-D-Glucopyranosyloxy)-5-hydroxy-7-(hydroxymethyl)-5,7a-dihydrocyclopenta[c]pyran-4a(1H)-yl β-D-glucopyranoside/(1S,4aS,5R,7aR)-5,7a-Dihydro-5-hydroxy-7-(hydroxymethyl)cyclopenta[c]pyran-1,4a(1H)-diyl bis-beta-D-glucopyranoside/β-D-Glucopyranoside, (1S,4aS,5R,7aR)-1-(β-D-glucopyranosyloxy)-5,7a-dihydro-5-hydroxy-7-(hydroxymethyl)cyclopenta[c]pyran-4a(1H)-yl

IUPAC Name

(2S,3R,4S,5S,6R)-2-[[(1S,4aS,5R,7aR)-5-hydroxy-7-(hydroxymethyl)-4a-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-5,7a-dihydro-1H-cyclopenta[c]pyran-1-yl]oxy]-6-(hydroxymethyl)oxane-3,4,5-triol

Applications

Melittoside is a natural compound

Density

1.8±0.1 g/cm3

Solubility

Methanol; Water

Flash Point

492.1±34.3 °C

Boiling Point

890.0±65.0 °C at 760 mmHg

Melting Point

167-168 ºC

InChl

InChI=1S/C21H32O15/c22-4-7-3-10(25)21(36-20-17(31)15(29)13(27)9(6-24)34-20)1-2-32-18(11(7)21)35-19-16(30)14(28)12(26)8(5-23)33-19/h1-3,8-20,22-31H,4-6H2/t8-,9-,10-,11+,12-,13-,14+,15+,16-,17-,18+,19+,20+,21-/m1/s1

InChl Key

LZKBAGSBRBMVBE-GVKBFFPQSA-N

WGK Germany

RID/ADR

HS Code Reference

2933990000

Personal Projective Equipment

Correct Usage

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

Meta Tag

provides coniferyl ferulate(CAS#:19467-03-9) 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

31409320

Abstract

Background
Community-acquired lower respiratory tract infections (CA-LRTIs) are the primary cause of hospitalization among children globally. A better understanding of the role of atypical pathogen infections in native conditions is essential to improve clinical management and preventive measures. The main objective of this study was to detect the presence of 7 respiratory viruses and 2 atypical pathogens among hospitalized infants and children with community-acquired lower respiratory tract infections in Luzhou via an IgM test.

Methods
Overall, 6623 cases of local hospitalized children with 9 pathogen-IgM results from 1st July 2013 to 31st Dec 2016 were included; multidimensional analysis was performed.

Results
1) Out of 19,467 hospitalized children with lower respiratory tract infections, 6623 samples were collected, for a submission ratio of 33.96% (6623 /19467). Of the total 6623 serum samples tested, 5784 IgM stains were positive, for a ratio of 87.33% (5784 /6623). Mycoplasma pneumoniae (MP) was the dominant pathogen (2548 /6623, 38.47%), with influenza B (INFB) (1606 /6623, 24.25%), Legionella pneumophila serogroup 1 (LP1) (485 /6623, 7.32%) and parainfluenza 1, 2 and 3(PIVs) (416 /6623, 6.28%) ranking second, third and fourth, respectively.

2) The distribution of various pathogen-IgM by age group was significantly different (χ2 = 455.039, P < 0.05). 3) Some pathogens were found to be associated with a certain age of children and seasons statistically. Conclusions The dominant positive IgM in the area was MP, followed by INFB, either of which prefers to infect children between 2 years and 5 years in autumn. The presence of atypical pathogens should not be underestimated clinically as they were common infections in the respiratory tract of children in the hospital.

KEYWORDS

Children, Community-acquired lower respiratory tract infections, Respiratory pathogens, IgM antibodies

Title

Immunoglobulin M profile of viral and atypical pathogens among children with community acquired lower respiratory tract infections in Luzhou, China

Author

Ai Chen,corresponding author1 Liyao Song,1 Zhi Chen,2 Xiaomei Luo,1 Qing Jiang,1 Zhan Yang,3 Liangcai Hu,4 Jinhua He,1 Lifang Zhou,1 and Hai Yu5

Publish date

2019 Aug 13

PMID

31857619

Abstract

Electrospinning technique is a simple and cheap method for fabrication of electrospun nanofibers (ENFs), which in turn can converted into electrospun carbon nanofibers (ECNFs) by carbonization process. The controlling of the ECNFs properties (e.g. surface area, porosity, diameters) during fabrication, make it superior over the other carbon nanomaterials. The aim of our study is to modify the surface of ECNFs to increase its hydrophilicity and in turn its efficiency in removing lead ions (Pb2+) from aqueous systems. The surface modification was carried out in two steps starting from oxidation of pristine ECNFs to produce oxidized ECNFs (o-ECNFs), followed by covalently bonded of melamine, and poly(m-phenylene diamine) for forming melamine-functionalized ECNFs (melam-ECNFs) and poly(m-phenylene diamine)-functionalized ECNFs (PmPDA-ECNFs), respectively. The as-prepared materials were characterized in routine way. The ability of the as-prepared materials towards adsorption of Pb2+ ions as heavy metal was investigated with the study of some factors such as pH solution, contact time, initial concentration and temperature. The adsorption process was analyzed isothermally, and kinetically. According to the values of the thermodynamic parameters, the adsorption of Pb2+ ions onto the functionalized ECNFs was endothermic and spontaneous, except with melam-ECNFs was exothermic.

Subject terms: Environmental sciences, Chemistry, Materials science, Nanoscience and technology

Title

Fabrication of functionalized electrospun carbon nanofibers for enhancing lead-ion adsorption from aqueous solutions

Author

Badr M. Thamer,1 Ali Aldalbahi,1 Meera Moydeen A,1 Abdullah M. Al-Enizi,1 Hany El-Hamshary,1,2 and Mohamed H. El-Newehycorresponding author1,2

Publish date

2019 Dec 19

PMID

19094239

Abstract

Background
The Burkholderia cepacia complex (BCC) is a versatile group of Gram negative organisms that can be found throughout the environment in sources such as soil, water, and plants. While BCC bacteria can be involved in beneficial interactions with plants, they are also considered opportunistic pathogens, specifically in patients with cystic fibrosis and chronic granulomatous disease. These organisms also exhibit resistance to many antibiotics, making conventional treatment often unsuccessful. KS10 was isolated as a prophage of B. cenocepacia K56-2, a clinically relevant strain of the BCC. Our objective was to sequence the genome of this phage and also determine if this prophage encoded any virulence determinants.

Results
KS10 is a 37,635 base pairs (bp) transposable phage of the opportunistic pathogen Burkholderia cenocepacia. Genome sequence analysis and annotation of this phage reveals that KS10 shows the closest sequence homology to Mu and BcepMu. KS10 was found to be a prophage in three different strains of B. cenocepacia, including strains K56-2, J2315, and C5424, and seven tested clinical isolates of B. cenocepacia, but no other BCC species. A survey of 23 strains and 20 clinical isolates of the BCC revealed that KS10 is able to form plaques on lawns of B. ambifaria LMG 19467, B. cenocepacia PC184, and B. stabilis LMG 18870.

Conclusion
KS10 is a novel phage with a genomic organization that differs from most phages in that its capsid genes are not aligned into one module but rather separated by approximately 11 kb, giving evidence of one or more prior genetic rearrangements. There were no potential virulence factors identified in KS10, though many hypothetical proteins were identified with no known function.

Title

Genomic sequence and activity of KS10, a transposable phage of the Burkholderia cepacia complex

Author

Amanda D Goudie,1 Karlene H Lynch,1 Kimberley D Seed,1 Paul Stothard,2 Savita Shrivastava,3 David S Wishart,1,3 and Jonathan J Denniscorresponding author1

Publish date

2008 Dec 18