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Methyl Stearate

CAS# 112-61-8

Methyl Stearate

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Quality Control of Methyl Stearate

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Chemical structure

Methyl Stearate

3D structure

Chemical Properties of Methyl Stearate

Cas No. 112-61-8 SDF Download SDF
PubChem ID 8201 Appearance Powder
Formula C19H38O2 M.Wt 298.5
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Chemical Name methyl octadecanoate
SMILES CCCCCCCCCCCCCCCCCC(=O)OC
Standard InChIKey HPEUJPJOZXNMSJ-UHFFFAOYSA-N
Standard InChI InChI=1S/C19H38O2/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19(20)21-2/h3-18H2,1-2H3
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Methyl Stearate Dilution Calculator

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Methyl Stearate Molarity Calculator

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Preparing Stock Solutions of Methyl Stearate

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.3501 mL 16.7504 mL 33.5008 mL 67.0017 mL 83.7521 mL
5 mM 0.67 mL 3.3501 mL 6.7002 mL 13.4003 mL 16.7504 mL
10 mM 0.335 mL 1.675 mL 3.3501 mL 6.7002 mL 8.3752 mL
50 mM 0.067 mL 0.335 mL 0.67 mL 1.34 mL 1.675 mL
100 mM 0.0335 mL 0.1675 mL 0.335 mL 0.67 mL 0.8375 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on Methyl Stearate

Statistical optimization for lipase production from solid waste of vegetable oil industry.[Pubmed:29424632]

Prep Biochem Biotechnol. 2018 Apr 21;48(4):321-326.

The production of biofuel using thermostable bacterial lipase from hot spring bacteria out of low-cost agricultural residue olive oil cake is reported in the present paper. Using a lipase enzyme from Bacillus licheniformis, a 66.5% yield of methyl esters was obtained. Optimum parameters were determined, with maximum production of lipase at a pH of 8.2, temperature 50.8 degrees C, moisture content of 55.7%, and biosurfactant content of 1.693 mg. The contour plots and 3D surface responses depict the significant interaction of pH and moisture content with biosurfactant during lipase production. Chromatographic analysis of the lipase transesterification product was methyl esters, from kitchen waste oil under optimized conditions, generated methyl palmitate, Methyl Stearate, methyl oleate, and methyl linoleate.

Demonstration of bioprocess factors optimization for enhanced mono-rhamnolipid production by a marine Pseudomonas guguanensis.[Pubmed:29208557]

Int J Biol Macromol. 2018 Mar;108:531-540.

We identified that Pseudomonas guguanensis produced macromolecular mono-rhamnolipid (1264.52Da) upon sensing n-hexadecane/diesel/kerosene from its surroundings. Permutation experiments were done to improve the laboratory-scale mono-rhamnolipid production (ie, a three-fold increase) using RSM validation. Consequently, maximal mono-rhamnolipids production [40-50mg/L] and emulsification abilities [65-70%] were encountered on day 8 using vegetable oil, peptone+yeast extract. EI24 values for the rhamnolipids were found to be 78+/-1.75% at 12.5mg/mL. Production and secretion of rhamnolipids were accompanied by aggregation of cells at day 6 as pictured in SEM. Pure monorhamnolipids of P. guguanensis was found to lower the surface tension of water to 32.98+/-0.3mN/m than the crude and CFSs of P. aeruginosa indicating efficient activity. Utilization and subsequent removal of hexadecane was 77.2% and the breakdown products were fatty acids [decanoic, hexadecanoic, octadecanoic acids and Methyl Stearates] as signified in Head-space GC-MS. The breakdown products of hexadecane are also present in the synthesized rhamnolipids suggesting their biosynthetic role. Rapid degradation of hexadecane, diesel and kerosene by this emulsifier combined with non-pathogenic trait of P. guguanensis identifies this organism as a viable option to remove n-alkanes from aquatic environments.

Phosphatidylinositol 4,5-bisphosphate, cholesterol, and fatty acids modulate the calcium-activated chloride channel TMEM16A (ANO1).[Pubmed:29277655]

Biochim Biophys Acta Mol Cell Biol Lipids. 2018 Mar;1863(3):299-312.

The TMEM16A-mediated Ca(2+)-activated Cl(-) current drives several important physiological functions. Membrane lipids regulate ion channels and transporters but their influence on members of the TMEM16 family is poorly understood. Here we have studied the regulation of TMEM16A by phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2), cholesterol, and fatty acids using patch clamp, biochemistry and fluorescence microscopy. We found that depletion of membrane PI(4,5)P2 causes a decline in TMEM16A current that is independent of cytoskeleton, but is partially prevented by removing intracellular Ca(2+). On the other hand, supplying PI(4,5)P2 to inside-out patches attenuated channel rundown and/or partially rescued activity after channel rundown. Also, depletion (with methyl-beta-cyclodextrin M-betaCD) or restoration (with M-betaCD+cholesterol) of membrane cholesterol slows down the current decay observed after reduction of PI(4,5)P2. Neither depletion nor restoration of cholesterol change PI(4,5)P2 content. However, M-betaCD alone transiently increases TMEM16A activity and dampens rundown whereas M-betaCD+cholesterol increases channel rundown. Thus, PI(4,5)P2 is required for TMEM16A function while cholesterol directly and indirectly via a PI(4,5)P2-independent mechanism regulate channel function. Stearic, arachidonic, oleic, docosahexaenoic, and eicosapentaenoic fatty acids as well as Methyl Stearate inhibit TMEM16A in a dose- and voltage-dependent manner. Phosphatidylserine, a phospholipid whose hydrocarbon tails contain stearic and oleic acids also inhibits TMEM16A. Finally, we show that TMEM16A remains in the plasma membrane after treatment with M-betaCD, M-betaCD+cholesterol, oleic, or docosahexaenoic acids. Thus, we propose that lipids and fatty acids regulate TMEM16A channels through a membrane-delimited protein-lipid interaction.

Thermally Reversible Fluorans: Synthesis, Thermochromic Properties and Real Time Application.[Pubmed:29442831]

J Nanosci Nanotechnol. 2018 May 1;18(5):3299-3305.

In the present study, two fluoran molecules (TH1 and TH2) have been synthesized, and their reversible thermochromic properties have been investigated. This work demonstrates the thermochromic reversibility of the fluoran. Furthermore, the three-component mixtures that comprising fluorans (TH1/TH2), bisphenol-A (color developer), and Methyl Stearate a low melting solvent were used to examine the thermochromic behavior with sturdy heating and cooling rates and the thermochromic properties of the fluorans were detailed using UV-Vis, reflectance and FT-IR spectroscopic techniques. Finally, test strip similar to pH paper and acrylic fiber a versatile material used as thermal indicators also been successfully made from these two fluoran derivatives.

Description

Methyl stearate, isolated from Rheum palmatum L. is a compopent of of soybean and rapeseed biodiesels.

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