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Organic Syntheses Procedure

After the reaction mixture is cooled to ambient temperature, the ethanol is removed on a rotary evaporator (25 mmHg, 55 C), and 57.9–65.7 g of a white solid is obtained as the title product 1 in quantitative yield (Note 4). Without further purification, the solid is ground with a ceramic mortar and pestle and used directly in Procedure B.

Physical and Chemical Properties of Biodiesel Obtained ...

Afterward, the oil was separated from the solvent (hexane) by vaporization using a Hahnvapor HS-2001NS rotary evaporator (Hahn Shin Scientific, South Korea). The oil obtained was contained in an amber glass bottle and stored in a freezer at −20C. 2.2.3. Biodiesel Production from Amazon Sailfin Catfish Oil

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Apr 05, 2022 Hahn shin. Rotary Evaporator. Vacum Pump. Cooling Water Circulator Bath. Vaccum Controller. Axis. Precise Technical Scales BTA Series. Analytical Balances ATN series. balances ACN Series. Moisture Analyzer ATS and BTS series. Huixia. Portable Refractometer.

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Beli Rotary Evaporator HS 2000NS dengan harga Rp 123,00 dari Gumira Glodok Maju di Jakarta Barat , DKI Jakarta Beli Rotary Evaporator hanya di Indotrading.com Jual beli Online dan Direktori Supplier B2B Indotrading ... Hahn Shin. Update. 21 Sep 2021. Min Order. 1. Tambah Keranjang. RV 10 Digital Rotary Evaporator Alat Laboratorium Umum. Rp 1 ...

Dehydrogenation of n-Butane to Butenes and 1 3-Butadiene ...

Cat A: Pt/Al 2 O 3 catalyst as a reference.. The calcined granules were reduced at 550˚C for 3 h to obtain the PtAg/Al 2 O 3 catalyst.. Cat B: Cl − free catalyst.. The Cl − removing granules and an aqueous solution of AgNO 3 were added to a 200-ml eggplant flask, then were mixed at 40˚C for 30 min. Water was removed from the flask using a rotary evaporator under reduced …

Organic Syntheses Procedure

Checked by Hyunik Shin and James D. White. 1. Procedure. ... The combined organic layers are evaporated on a rotary evaporator to give a brown oil. The oil is purified by chromatography on 300 g of alumina (Note 21) using 1000 mL of toluene / ethanol: 50:1 as the eluant. The first 120–150 mL of eluant is removed.

Effect of nutritional factors on the accretion of ...

Dec 21, 2019 To identify eurycomanone, about 2 g of the ground-dried roots were extracted in 10 mL of 80% methanol and sonicated for 1 h. Crude extract was filtered through filter paper (Advantec 110 mm, Toyo Rosihi Kaisha Ltd., Japan) and concentrated using a vacuum rotary evaporator (Tokyo Rikakikai Co., Japan) in a water bath at 50 C.

Propranolol degradation through processes based on the ...

Dec 30, 2021 The recovered extract was evaporated at 83 C on a rotary evaporator (Hahn Shin Scientific Co, model HS-2000 NS) until a dense paste was obtained. Finally, the residual moisture was removed using a desiccator for approximately 12 h. PRO was identified by determining the melting point, its absorption spectrum, and by gas chromatography coupled ...

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DIGITAL ROTARY EVAPORATOR HS-2005S-N Dimensions( W* D* H) : 730* 410* 630mm Power source : AC 220V 50/ 60Hz 2.5A Weight : 19.5kg Distinguished Features 6 - 1735234

Hydroxychavicol a polyphenol from Piper betle leaf ...

Feb 15, 2021 The fractions containing HC were pooled and dried using a rotary evaporator (Hahn Shin Science, Gyeonggi-do, Korea). Thereafter, column chromatography, with silica gel as the stationary phase, was performed to further isolate HC. The dried sample was loaded evenly onto the column containing silica gel, and a fraction collector (Advantec ...

HAHN SHIN SCIENTIFIC HS-2005V-N ( CE) DIGITAL ROTARY ...

HAHN SHIN SCIENTIFIC, HS-2005V-N ( CE) , DIGITAL ROTARY EVAPORATOR; ... DIGITAL ROTARY EVAPORATOR HS-2005V-N Dimensions( W* D* H) : 620* 410* 870mm Power source : AC 220V 50/ 60Hz 2.5A / Weight : 19.5kg Distinguished Features 6 different types of flasks are attachable ( from 50ml to 3000ml) Digital speed control Digital R.P.M Display / Speed ...

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Hydroxychavicol a polyphenol from Piper betle leaf ...

J Zhejiang Univ-Sci B (Biomed Biotechnol) 2021 22(2):112-122 | Chakraborty et al., 2012; Rahman et al., 2014). Abnormalities in cell proliferation and the evasion of

Chemical fingerprint of Centella ... -

Jan 01, 2020 The crude extracts were purified using a rotary evaporator (Heidolph Rotary Evaporator, WB 2000 and VV 2000, Heidolph Instruments GmbH Co KG, Schwabach, Germany) at the temperature of 50 C with the mixing speed of 120 rpm. ... D. Schuppan, E.G. Hahn. Chemical, pharmacological and clinical profile of the East Asian medical plant Centella ...

Synthesis and Potential Applications of Lipid ...

Jan 17, 2022 The residual solvent is removed by evaporation in a vacuum rotary evaporator. This process leads to monolayer vesicular niosomes of various sizes. Reverse Phase Evaporation (REV) Method: The REV method was first presented by Szoka and Papahadjopoulos in 1978 as a technique to obtain LUV-type niosomes. It involves the …

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Jual HS 2005 VN ROTARY EvAPoRAtOR HAHNVApOR DLAB RE100 PRO dengan harga Rp 1000.00 dari Depolab Indonesia. ... -Hahn Shin Scientifics special vacuum seal made of Teflon double-bind and NBR nitrile to provide a seal with anti-abrasion, anti-aging, and anti-chemical function, which allows the engine to create high vaccum pressure. ...

Hypocholesterolemic Properties and Prebiotic Effects of ...

Jul 20, 2016 Mushrooms extracts were concentrated to 10 ml in a rotary evaporator (HS-2000NS, Hahn Shin Scientific, South Korea) at 19C. They were then filter-sterilized (0.45 μm, Merck Millipore, Mexico), freeze-dried overnight using a vacuum apparatus (Labconco, Freezone 4.5, U.S.A.), and stored at 4C until use. ...

Merocyanine Dyes with Improved Photostability

Jun 06, 2007 The reaction mixture was cooled to room temperature and the methanol was evaporated using a rotary evaporator. The residue was treated with 200 mL of water and extracted with dichoromethane (3*100 mL). Combined organic extracts were dried over magnesium sulfate and solvent was evaporated on a rotary evaporator.

Influence of different solvents in extraction of phenolic ...

Jun 19, 2012 The extracts were filtered using Buchner funnel lined with Whatman no.1 filter paper. The process was repeated twice for each extract and the final volume was made to 100 ml with deionized water. Samples were concentrated using rotary evaporator (Hahn Shin, Korea) at 40 C for removal of the solvents (Babbar et al. 2011). The extracts were ...

The combined effect of different concentrations of Vitex ...

Mar 01, 2022 After grinding the plant materials, extraction of the powders was performed with ethanol at room temperature for 48 h. The extracted material was filtered and concentrated with rotary evaporator (hahn shin, Korea) at 45 C. Sample …

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Mar 28, 2022 Hahn shin. Rotary Evaporator. Vacum Pump. Cooling Water Circulator Bath. Vaccum Controller. Axis. Precise Technical Scales BTA Series. Analytical Balances ATN series. balances ACN Series. Moisture Analyzer ATS and BTS series. Huixia. Portable Refractometer.

Synthesis of a highly Zn2+-selective cyanine-based probe ...

May 01, 2014 Remove the solvent by rotary evaporation (water bath temperature: 25 C). ... Ko, S.K., Shin, I. Tae, J. Synthesis of a highly metal-selective rhodamine-based probe and its use for the in vivo ...

Enhanced localization of anticancer drug in ... - SpringerOpen

May 05, 2014 MC was then removed using a rotary evaporator at 20C to produce carboxylated PEI-co ... Jeong KS, Seong H, Shin BC: Increased stability in plasma and enhanced cellular uptake of thermally denatured albumin-coated liposomes. Colloids Surf B Biointerfaces 2010, 76: 434–440. 10.1016/j.colsurfb.2009.12.002.

Zingiber officinale (Roscoe) mitigates CCl 4 ... - Europe PMC

May 06, 2019 The filtrate was concentrated with a rotary evaporator (Hahn Shin Scientific, HS-2005-N) and freeze-dried in a Lyophilizer (Ilshin Lab. Co. Ltd, Seoul, Republic of Korea). The resulting yield, which was methanol extract of Zingiber officinale rhizome (MEZOR), was weighed and kept in a desiccator until when needed.

The influence of deuteration on the crystal structure of ...

rotary evaporator until a white powder occurred. Subse-quently, another 4.5 ml of hydrobromic acid in 10 ml milliQ water was added and distilled in the rotary evaporator until 19.87 g (99.35%) formamidinium bromide, as a white crystal-line powder resulted. In a 50 ml flask with stirring bar and a stopper, 8 g of

Hahn Kim and David W. C. MacMillan*

rotary evaporator using an ice-water bath for volatile compounds. Potassium trifluoroborate salts were synthesized from commercially or readily available boronic acids or esters using a modified Molander procedure.3 Chromatographic purification of products was accomplished using force-flow chromatography on Silicycle silica gel

Comparative assessment of extraction methods and ...

Sep 01, 2014 The menstruum was then filtered and the filtrate was evaporated to obtain the residue using rotary evaporator (HAHN SHIN, HS-2005V-N) at 40 C. The residue was weighed and appropriate dilutions were made for quantitative estimation of luteolin in the extract. 2.3.2. Extraction through reflux Hot solvent extraction was done using a reflux ...

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Nanomaterials Free Full-Text Synthesis of Ziziphus ...

Sep 29, 2021 After wrapping with aluminum foil, the flask was shaken for 6 h using a Wrist Action shaker (Burrell Scientific, Pittsburgh, PA, USA). The extractive was filtered (Whatman No. 1 filter paper), and then concentrated in vacuo using a rotary evaporator (HAHNVAPOR, HS-2005, Hahn Shin Sientific, Gimpo-si, Korea). The concentrated root extract (4.9 ...

Water Free Full-Text Urban Watercourses in ... - MDPI

The decanted sample was concentrated in a rotary evaporator (HS-2005 V-N(CE), Hahn Shin, Korea) until the sample reached a volume less than 1 mL and the final volume was adjusted to 1 mL by adding dichloromethane. The 1 mL prepared sample was placed in a GC sampling vial and spiked with 10 L of the internal standard (500 mg/L) and fed into ...

Ultrasound-Assisted and Microwave-Assisted Extraction GC ...

The extract was then filtered through Whatman No. 1 filter paper and concentrated using a rotary evaporator (Brand: HAHN SHIN. HS-2005V-N) at temperature below the boiling point of solvents. The yield (%) was calculated using the equation reported earlier. 17,26 The dry extracts were dissolved in the respective solvent and stored at 4C in a ...

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