scholarly journals On Rotational Relaxation as a Cause of the Anomalous Ultrasonic Absorption of Ethyl Acetate

1953 ◽  
Vol 25 (4) ◽  
pp. 826-826
Author(s):  
Eli Freedman ◽  
Robert T. Beyer
Keyword(s):  
Ethyl Acetate ◽  
Rotational Relaxation ◽  
Ultrasonic Absorption

Ultrasonic Absorption in Ethyl Acetate

1959 ◽  
Vol 31 (1) ◽  
pp. 111-111
Author(s):  
E. F. Carome ◽  
F. A. Gutowski ◽  
S. R. Burlage
Keyword(s):  
Ethyl Acetate ◽  
Ultrasonic Absorption

Question of Ultrasonic Absorption Peaks in Ethyl Acetate

1957 ◽  
Vol 29 (9) ◽  
pp. 1034-1034
Author(s):  
R. T. Beyer ◽  
K. C. Jacob
Keyword(s):  
Ethyl Acetate ◽  
Ultrasonic Absorption

Ultrasonic Absorption in Ethyl Acetate

1960 ◽  
Vol 32 (4) ◽  
pp. 510-511
Author(s):  
E. F. Carome ◽  
S. R. Burlage
Keyword(s):  
Ethyl Acetate ◽  
Ultrasonic Absorption

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

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
M Diab-Assaf ◽  
RI Taleb ◽  
W Shebaby ◽  
A Mansour ◽  
CJ Moussa ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Anticancer Activities

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

Planta Medica ◽  
2006 ◽  
Vol 72 (11) ◽  
Author(s):  
RM Marçal ◽  
DM Ptak ◽  
RR Krempser ◽  
MR Krempser ◽  
SV Floresta ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Ethyl Acetate Extract

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

ENTOMON ◽  
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.

CONJUGATED OESTROGENS. I

1963 ◽  
Vol 43 (3) ◽  
pp. 345-360 ◽  
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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