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Molecules | Free Full-Text | Synthesis and Antiradical .

Molecules | Free Full-Text | Synthesis and Antiradical .

A mixture of diacetylcaffeic acid (2, 300 mg, 1.13 mmol), thionyl chloride (5 mL) and two drops of DMF was heated at reflux for 4 h. The excess thionyl chloride (SOCl 2) was removed on a rotovap, and the residue was dissolved in dry CH 2 Cl 2 (4 mL). To this solution was slowly added pyridine (1 mL) and 3-phenylpropan-1-ol (232.0 μL, 1.71 mmol .

Tricks of the Trade for Removing High Boiling Point Solvents

Tricks of the Trade for Removing High Boiling Point Solvents

• DMF (Dimethylformamide ) • DMSO (Dimethylsulfoxide) occurring to the left of water (which is in yellow) on the graph. Boiling Temperature vs Chamber Pressure for Common Solvents-40-30-20-10 0 10 20 30 40 50 60 0.10 1.00 10.00 100.00 1000.00 Pressure (mbar) Boiling temperature (deg C) DMSO DMF Water Toluene IPA Ethanol

the hive archive

the hive archive

Fixing an old rotovap: Chemicals and Equipment : Flippie: Strikes book Sources: Chemicals and Equipment : homeslice: p-benzo picture? Chemicals and Equipment : halfkast: The Copper/Cu tube/tubing Handbook! Chemicals and Equipment : Kerrupt: a piperazine compound 'Pipes' Chemicals and Equipment : Rhodium: Piper affinis hisp.: Safrole (18% .

N,N-Dimethylformamide dimethyl acetal | Sigma-Aldrich

N,N-Dimethylformamide dimethyl acetal | Sigma-Aldrich

Sigma-Aldrich offers a number of N, N -Dimethylformamide dimethyl acetal products. View information & documentation regarding N, N -Dimethylformamide dimethyl acetal, including CAS, MSDS & more.

Parallel synthesis of 1,2,4-oxadiazoles using CDI .

Parallel synthesis of 1,2,4-oxadiazoles using CDI .

After mixing for 30 min, 1.0 mL of a 0.55 M benzamidoxime solution (0.55 mmol) in DMF was added and the resulting solution was mixed for 4 h at 25 . A further 0.55 mL of 1.0 M CDI (0.55 mmol) in DMF was added and the reaction mixtures were heated to 115 for 6 h .

Caffeic Acid Esters Are Effective Bactericidal Compounds .

Caffeic Acid Esters Are Effective Bactericidal Compounds .

4.39 mmol, 2 eq.) was added dropwise to this solution before adding DMF (5 drops). The reaction mixture was stirred for 16 h at room temperature. Excess oxalyl chloride was removed under reduced pressure via rotovap, and the resulting oil was dissolved in toluene (25 mL). Pyridine (2 mL) was added

Rotary evaporator - Wikipedia

Rotary evaporator - Wikipedia

A rotary evaporator (or rotavap /rotovap) is a device used in chemical laboratories for the efficient and gentle removal of solvents from samples by evaporation.When referenced in the chemistry research literature, description of the use of this technique and equipment may include the phrase "rotary evaporator", though use is often rather signaled by other language (e.g., "the sample was .

Parallel synthesis of 1,2,4-oxadiazoles using CDI .

Parallel synthesis of 1,2,4-oxadiazoles using CDI .

After mixing for 30 min, 1.0 mL of a 0.55 M benzamidoxime solution (0.55 mmol) in DMF was added and the resulting solution was mixed for 4 h at 25 . A further 0.55 mL of 1.0 M CDI (0.55 mmol) in DMF was added and the reaction mixtures were heated to 115 for 6 h .

Organic Peeps | Food science meets organic synthesis. or .

Organic Peeps | Food science meets organic synthesis. or .

This is a little outside the normal "candy-torture" theme of this blog, but bisphenol A (BPA) has gotten so much press in the past few years that I thought I would talk a little bit about it. Initially, the concern was that BPA leached from the plastic lining of food containers and polycarbonate plastics (like that Nalgene you used to carry around until switching to a SIG bottle after .

Preparing Anhydrous Reagents and Equipment | Protocol

Preparing Anhydrous Reagents and Equipment | Protocol

Note that slightly larger 4-Å beads are used for drying of amines, dimethylformamide (DMF), and hexamethylphosphoramide (HMPA) by storing them over the beads using 5% w/v for at least 24 h. Molecular sieves should not be used for drying acetone, because they are basic and induce an aldol reaction in acetone.

Utilize conjugated melanotropins for the earlier diagnosis .

Utilize conjugated melanotropins for the earlier diagnosis .

Jun 11, 2011 · Collect the filtrate into a round-bottom flask and rotovap DMF off. Dissolve the dark syrupy residue in 1M acetic acid and lyophilize. Purify by a gradual stepwise 50 min gradient (10% acetonitrile/0.1% TFA-water - 80% acetonitrile/0.1% TFA-water) (Cai et al., 2004).

Research and Reviews: Journal of Chemistry

Research and Reviews: Journal of Chemistry

MW, Z nO, DMF 1 2 MW, Z nO, DMF C O O H C O O H 3 4 Toluene (1) and napthlene (3) (10 mmol), zinc oxide (0.2 g, 2.5 mmol) and N,N-dimethylformamide (0.18 ml, 2.5 mmol) were placed in aborosil beaker (50 ml) . The mixture was mixed properly with the help of a glass rod (15 sec)

Mechanism for rapid growth of organic–inorganic halide .

Mechanism for rapid growth of organic–inorganic halide .

Nov 10, 2016 · DMF can decompose into formic acid (FAH) and dimethylamine and GBL can decompose to γ-hydroxybutyric acid . recovered using a rotovap. . J. Dimethylformamide.

Hydrodecarboxylation of Carboxylic and Malonic Acid via .

Hydrodecarboxylation of Carboxylic and Malonic Acid via .

S6! 1-((benzyloxy)carbonyl)piperidine-4-carboxylic acid: Prepared according to previously published literature procedure. Analytical data were in agreement with literature values7. 2-benzyl-2-methylmalonic acid: To a 250 mL round bottom flask was added 1.2 g (2.0 equivalents) of sodium hydride and 160 mg of potassium tertbutoxide (0.1 equivalents), followed by 75 mL of dry DMF.

Dimethylformamide - Wikipedia

Dimethylformamide - Wikipedia

Dimethylformamide is an organic compound with the formula (CH 3) 2 NC(O)H. Commonly abbreviated as DMF (although this initialism is sometimes used for dimethylfuran, or dimethyl fumarate), this colourless liquid is miscible with water and the majority of organic liquids. DMF is a common solvent for chemical reactions.Dimethylformamide is odorless, but technical-grade or degraded samples often .

Molecules | Free Full-Text | Synthesis and Antiradical .

Molecules | Free Full-Text | Synthesis and Antiradical .

A mixture of diacetylcaffeic acid (2, 300 mg, 1.13 mmol), thionyl chloride (5 mL) and two drops of DMF was heated at reflux for 4 h. The excess thionyl chloride (SOCl 2) was removed on a rotovap, and the residue was dissolved in dry CH 2 Cl 2 (4 mL). To this solution was slowly added pyridine (1 mL) and 3-phenylpropan-1-ol (232.0 μL, 1.71 mmol .

N,N-dimethylformamide - Substance Information - ECHA

N,N-dimethylformamide - Substance Information - ECHA

Hazard classification & labelling Hazard classification and labelling. The 'Hazard classification and labelling' section shows the hazards of a substance based on the standardised system of statements and pictograms established under the CLP (Classification Labelling and Packaging) Regulation. The CLP Regulation makes sure that the hazards presented by chemicals are clearly communicated to .

static-content.springer.com

static-content.springer.com

Identification of Carbohydrate Anomers Using Ion Mobility-Mass Spectrometry J. Hofmann1,2†, H. S. Hahm3,4†, P. H. Seeberger3,4*, K. Pagel2* 1. Fritz Haber .

When Reagents Attack! | In the Pipeline

When Reagents Attack! | In the Pipeline

A couple of my own, rather shameful safety anecdotes: using calcium hydride to dry DMF. To dispose of the residue I carefully cool the flask in ice water and added ethanol very slowly. A mild fizz results. Said flask is then left for a few hours, by which time all hydrogen evolution seems to be over. Flask then placed under a jet of water – POW!

Optical Properties of Nanocellulose Dispersions in Water .

Optical Properties of Nanocellulose Dispersions in Water .

The rotovap had a hot bath set at 75 °C, speed fixed at 80 revolutions per minute, cooling coil running with ice water, and was placed under vacuum until about 150 mL of the liquid (predominantly water) was collected in the trap. The process of adding 150 mL of DMF and removing 150 mL of liquid via the rotovap was repeated several times.

Azeotropic Data for Binary Mixtures

Azeotropic Data for Binary Mixtures

-3-AZEOTROPIC DATA FOR BINARY MIXTURES (continued) Molecular formula Name taz/°C x1 C6H14 Hexane 51.8 0.642 Propanoic acid C3H6O2 C5H5N Pyridine 148.6 0.686 C7H16 Heptane 97.8 0.027 C9H12 Propylbenzene 139.5 0.830 1-Nitropropane C3H7NO2 C3H8O 1-Propanol 97.0 0.061 C7H16 Heptane 96.6 0.149 1-Propanol C3H8O C4H8O2 1,4-Dioxane 95.3 0.642 C6H6 Benzene 77.1 0.209 .

Supplementary Information Non-Isocyanate Thermoplastic .

Supplementary Information Non-Isocyanate Thermoplastic .

FlackTek max 20 mixing cup. Following this, 6.3 mL of dimethylformamide (DMF) were added to adjust the concentration of reacting functional groups to 0.6 M. The solution was mixed in a FlackTek DAC 150.1 FVZ-K SpeedMixer™ for 5 min at 3500 rpm and reacted at70 °C for 24 hr.

The Synthesis and Characterization of Corannulene-Based .

The Synthesis and Characterization of Corannulene-Based .

evaporated using a rotovap. With a solid solution in the round bottom flask, the recrystallization process could then be performed. A small amount of methanol was added while swirling the flask to ultimately dissolve the powder. If all of the powder could not dissolve .

The

The "Original" DMSO - DMSO

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Rotary evaporator - WikiMili, The Free Encyclopedia

Rotary evaporator - WikiMili, The Free Encyclopedia

Dimethylformamide is an organic compound with the formula (CH 3) 2 NC(O)H. Commonly abbreviated as DMF (although this initialism is sometimes used for dimethylfuran, or dimethyl fumarate), this colourless liquid is miscible with water and the majority of organic liquids. DMF is a common solvent for chemical reactions.

Patent Report: | US10020538 | Salts for multivalent ion .

Patent Report: | US10020538 | Salts for multivalent ion .

The cooled mixture was transferred to a ROTOVAP rotary evaporator and the volatiles were removed by evaporation to a thick dark oil. Portions of water (50 mL) were added and evaporated in the same manner until any remaining trifluoroacetic acid was substantially gone. . propylene carbonate (PC), dimethylformamide (DMF), and acetonitrile (ACN .

Parallel synthesis of 1,2,4-oxadiazoles using CDI .

Parallel synthesis of 1,2,4-oxadiazoles using CDI .

Pergamon Bioorganic & Medicinal Chemistry Letters 9 (1999) 209-212 BIOORGANIC & MEDICINAL CHEMISTRY LETTERS PARALLEL SYNTHESIS OF 1,2,4-OXADIAZOLES USING CDI ACTIVATION Tracy L. Deegan," Theodore J. Nitz,b Diane Cebzanov,b Denise E. Pufko,b and John A. Porco, Jr."* aArgonaut Technologies, 887 Industrial Road, Suite G, San Carlos, CA 94070, L~S.A b Viropharma, .

Supporting Information for: Rosette Nanotubes with 1.4 nm .

Supporting Information for: Rosette Nanotubes with 1.4 nm .

S1 Supporting Information for: Rosette Nanotubes with 1.4 nm Inner Diameter from a Tricyclic Variant of the Lehn–Mascal G∧C Base Gabor Borzsonyi,a,b Ross S. Johnson,a,b Andrew J. Myles,b Jay-Young Cho,b Takeshi Yamazaki,b Rachel L. Beingessner, Andriy Kovalenko,b,c and Hicham Fenniri*,a,b a Department of Chemistry, 11227 Saskatchewan Drive, University of Alberta, Edmonton,

Sciencemadness Discussion Board - Dichloromethane .

Sciencemadness Discussion Board - Dichloromethane .

Aug 04, 2011 · Dies ist aber in diesem Beispiel nicht erforderlich. Als Lösungsmittel verwendet man polare aprotische Lösungsmittel, wie Dimethylformamid(DMF) oder Dimethylsulfoxid(DMSO). Mit DMSO könnte man man auch versuchen, das giftige DMF zu ersetzen. Wie schon eingangs erwähnt, erzeugt man das Wittig-Reagenz durch Deprotonierung mit einer starken Base.

All reactions were carried out in oven-dry glassware under .

All reactions were carried out in oven-dry glassware under .

Anhydrous DMF, anhydrous triethylamine, anhydrous pyridine and other solvents were obtained from commercial suppliers (J. T. Baker, EMD and Aldrich) and used without any further purification. N MR spectra were recorded on Bruker DRX 300, 400 and 500MHz spectrometers All chemical shifts are reported in parts per million (δ). All