Preparation and Structural Investigation of PMMA-Polystyrene ^|^lsquo;Janus Beads^|^rsquo; by Rapid Evaporation of an Ethyl Acetate Aqueous Emulsion

As part of a program to develop iron particles for next generation recording disk medium, their structural properties were investigated using transmission electron microscopy and electron diffraction. Iron particles are a more desirable recording medium than iron oxide, the most widely used material in disk manufacturing, because they offer a higher magnetic output and a higher coercive force. The particles were prepared by a method described elsewhere. Because of their strong magnetic interaction, a method had to be developed to separate the particles on the electron microscope grids.

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INTRAMOLECULAR CATIONIC [5 + 2] CYCLOADDITION REACTIONS PROMOTED BY TRIMETHYLSILYL TRIFLATE IN 3.0 M LITHIUM PERCHLORATE-ETHYL ACETATE: APPLICATION TO A FORMAL TOTAL SYNTHESIS OF (±)-ISOCOMENE

Tetrahedron ◽

10.1016/s0040-4020(97)00581-4 ◽

1997 ◽

Vol 53 (26) ◽

pp. 8975-8996

Author(s):

P Grieco*

Keyword(s):

Total Synthesis ◽

Ethyl Acetate ◽

Lithium Perchlorate ◽

Cycloaddition Reactions

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Pyrolysis of a polyvinylsilazane, polymeric precursor for silicon carbonitride : structural investigation by 1H, 13C, 29Si, 15N and 14N nuclear magnetic resonance

Journal de Chimie Physique ◽

10.1051/jcp/1992890461 ◽

1992 ◽

Vol 89 ◽

pp. 461-467 ◽

Cited By ~ 10

Author(s):

C Gerardin ◽

F Taulelle ◽

J Livage

Keyword(s):

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Structural Investigation ◽

Silicon Carbonitride ◽

Polymeric Precursor ◽

Nuclear Magnetic

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Antioxidant and anticancer activities of methanolic, ethyl acetate and chloroform extracts of Arum Palaestinum

Planta Medica ◽

10.1055/s-0032-1321076 ◽

2012 ◽

Vol 78 (11) ◽

Cited By ~ 4

Author(s):

M Diab-Assaf ◽

RI Taleb ◽

W Shebaby ◽

A Mansour ◽

CJ Moussa ◽

...

Keyword(s):

Ethyl Acetate ◽

Anticancer Activities

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Antinociceptive profile of ethyl acetate extract of Hyptis fruticosa Salzm. ex Benth. (Labiatae)

Planta Medica ◽

10.1055/s-2006-949878 ◽

2006 ◽

Vol 72 (11) ◽

Author(s):

RM Marçal ◽

DM Ptak ◽

RR Krempser ◽

MR Krempser ◽

SV Floresta ◽

...

Keyword(s):

Ethyl Acetate ◽

Ethyl Acetate Extract

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Phytochemical screening for identification of bioactive compounds of Lantana camara Linn. (Verbenaceae) responsible for larvicidal action against Aedes triseriatus Say, 1823 (Diptera : Culicidae)

ENTOMON ◽

10.33307/entomon.v44i2.438 ◽

2019 ◽

Vol 44 (2) ◽

pp. 117-126

Author(s):

Rhitayu Chakraborti ◽

Probir Kumar Bandyopadhyay

Keyword(s):

Ethyl Acetate ◽

Bioactive Compounds ◽

Active Ingredient ◽

Crude Extract ◽

Ethyl Acetate Extract ◽

Lantana Camara ◽

Mosquito Larvae ◽

Aedes Triseriatus ◽

Phytochemical Screening ◽

Lc50 Value

Study to assess the larvicidal property of Lantana camara leaves against Aedes triseriatus larvae found that the ethyl acetate extract had profound larvicidal action with the crude extract having a LC50 value of 409.831ppm. GC-MS analysis of the ethyl acetate extract confirmed the presence of twenty-one compounds out of which beta-caryophyllene covered the highest percentage of the chromatogram area. Further tests with beta-caryophyllene against the mosquito larvae proved it to be the active ingredient of L. Camara with a LC50 value of 104.243ppm.

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CONJUGATED OESTROGENS. I

Acta Endocrinologica ◽

10.1530/acta.0.0430345 ◽

1963 ◽

Vol 43 (3) ◽

pp. 345-360 ◽

Cited By ~ 9

Author(s):

Stanley Kushinsky ◽

Jane (Wu) Tang

Keyword(s):

Molecular Weight ◽

Formic Acid ◽

Ethyl Acetate ◽

High Molecular Weight ◽

Secondary Amine ◽

Aqueous Ammonia ◽

Organic Solution ◽

Extraneous Material

ABSTRACT A convenient and mild procedure is described in this paper whereby free and conjugated oestrogens may be extracted from urine. The extracts containing approximately 90 per cent of the oestrogens are devoid of most of the extraneous material and may be reduced in volume to less than 1/15 of that of the urine. The procedure consists of the following steps: (1) a 10 per cent (v/v) solution of a high molecular weight secondary amine (Amberlite LA-2, Rohm and Haas) in ethyl acetate is washed with formic acid and water, (2) the oestrogens in urine (acidified to pH 2 or 3 with H2SO4) are extracted with the LA-2 solution, (3) the oestrogen fraction is back-extracted from the organic solution with dilute aqueous ammonia.

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