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Neoprzewaquinone A

$1,344

  • Brand : BIOFRON

  • Catalogue Number : BD-P0192

  • Specification : 95.0%(HPLC)

  • CAS number : 630057-39-5

  • Formula : C36H28O6

  • Molecular Weight : 556.6

  • PUBCHEM ID : 124222343

  • Volume : 25mg

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Catalogue Number

BD-P0192

Analysis Method

HPLC,NMR,MS

Specification

95.0%(HPLC)

Storage

-20℃

Molecular Weight

556.6

Appearance

Red powder

Botanical Source

Structure Type

Diterpenoids

Category

SMILES

CC1=CCCC2=C(C=CC3=C2C(=O)C(=O)C4=C3OC=C4C)C(=C)CCCC5=C1C=CC6=C5C(=O)C(=O)C7=C6OC=C7C

Synonyms

(2Z)-2,11,28-trimethyl-19-methylidene-13,30-dioxaheptacyclo[21.11.0.06,18.07,15.010,14.024,32.027,31]tetratriaconta-1(23),2,6(18),7(15),10(14),11,16,24(32),27(31),28,33-undecaene-8,9,25,26-tetrone

IUPAC Name

(2Z)-2,11,28-trimethyl-19-methylidene-13,30-dioxaheptacyclo[21.11.0.06,18.07,15.010,14.024,32.027,31]tetratriaconta-1(23),2,6(18),7(15),10(14),11,16,24(32),27(31),28,33-undecaene-8,9,25,26-tetrone

Applications

Algicidal activity of Salvia miltiorrhiza Bung on Microcystis aeruginosa-Towards identification of algicidal substance and determination of inhibition mechanism PUMID/DOI:DOI: 10.1016/j.chemosphere.2013.05.068 Chemosphere. 2013 Oct;93(6):997-1004. The present study was to isolate and identify a potent algicidal compound from extract of Salvia miltiorrhiza and study the potential inhibition mechanism on Microcystis aeruginosa. Column chromatography and bioassay-guided fractionation methods were carried out to yield neo-przewaquinone A, which was identified by spectral analysis. The EC50 of neo-przewaquinone A on M. aeruginosa were 4.68 mg L-1. In addition, neo-przewaquinone A showed relatively higher security on Chlorella pyrenoidosa and Scenedesmus obliquus, with the EC50 values of 14.78 and 10.37 mg L-1, respectively. For the potential inhibition mechanisms, neo-przewaquinone A caused M. aeruginosa cells morphologic damage or lysis, increased malondialdehyde content and decreased the soluble protein content, total antioxidant and superoxide dismutase activity, and significantly inhibited three photosynthesis-related genes (psaB, psbD, and rbcL). The results demonstrated the algicidal effect of neo-przewaquinone A on M. aeruginosa and provided the possible inhibition mechanisms. (C) 2013 Elsevier Ltd. All rights reserved.

Density

1.4±0.1 g/cm3

Solubility

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

Flash Point

411.7±25.6 °C

Boiling Point

799.2±60.0 °C at 760 mmHg

Melting Point

InChl

InChI=1S/C36H28O6/c1-17-7-5-9-24-22(12-14-26-30(24)34(40)32(38)28-20(4)16-42-36(26)28)18(2)8-6-10-23-21(17)11-13-25-29(23)33(39)31(37)27-19(3)15-41-35(25)27/h8,11-16H,1,5-7,9-10H2,2-4H3/b18-8-

InChl Key

SXQCYGZVSVUMEL-LSCVHKIXSA-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#:630057-39-5) 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

22342283

Abstract

Increasing concerns about the spread of airborne pathogens such as severe acute respiratory syndrome (SARS) and novel swine-origin influenza A (H1N1) have attracted public attention to bioaerosols and protection against them. The airborne pathogens are likely to be expelled from coughing or speaking, so the physical data of the exhaled particles plays a key role in analyzing the pathway of airborne viruses. The objective of this study was to analyze the initial velocity and the angle of the exhaled airflow from coughing and speaking of 17 males and 9 females using Particle Image Velocimetry (PIV) and acrylic indoor chamber. The results showed that the average initial coughing velocity was 15.3 m/s for the males and 10.6 m/s for the females, while the average initial speaking velocity was 4.07 m/s and 2.31 m/s respectively. The angle of the exhaled air from coughing was around 38° for the males and 32° for the females, while that of the exhaled air from speaking was around 49° and 78° respectively. Also, the linear relation between the tested subject’s height and their coughing and speaking velocity was shown in this study.

KEYWORDS

Keywords: Airborne pathogens, Angle, Bioaerosols, Particle Image Velocimetry (PIV), Velocity

Title

Study on the initial velocity distribution of exhaled air from coughing and speaking

Author

Soon-Bark Kwon,a Jaehyung Park,a Jaeyoun Jang,a Youngmin Cho,a Duck-Shin Park,a Changsoo Kim,b Gwi-Nam Bae,c and Am Jangd,⁎

Publish date

2012 Jun;