Category: 3903-40-0

Long-Chain Modification of the Tips and Inner Walls of MWCNTs and Their Nanocomposite Reverse Osmosis Membranes was written by Li, Qing;Yang, Dengfeng;Liu, Qingzhi;Wang, Jianhua;Ma, Zhun;Xu, Dongmei;Gao, Jun. And the article was included in Membranes (Basel, Switzerland) in 2022.Product Details of 3903-40-0 This article mentions the following:

Multi-walled carbon nanotubes (MWCNTs) were modified on the tips and inner walls by 12-chloro-12-oxododecanedioic acid-Me ester groups and then added to the polyamide composite membranes to prepare MWCNT-CH₂OCOC₁₂H₂₃O₂ membranes for desalination. The characterization results of transmission electron microscopy, Fourier transform, IR transform, and thermogravimetric anal. showed that the 12-chloro-12-oxododecanedioic acid-Me ester group was successfully grafted to the entrances and inner walls of the MWCNTs. The performance of the MWCNTs’ composite membranes was evaluated by SEM, contact angle, and filtration test. The modified membrane morphol. is more uniform, and there is no structural damage. The grafting of carbon nanotubes with Me 12-chloro-12-oxydodecyldicarboxylate could improve the hydrophilicity of the membrane. Under identical conditions, the water flux of MWCNT-CH₂OCOC₁₂H₂₃O₂ membranes was higher than that of the pristine carbon nanotube’s membrane, and the desalination rate was also slightly improved. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Product Details of 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Product Details of 3903-40-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Analogs of capsaicin with agonist activity as novel analgesic agents; structure-activity studies. 3. The hydrophobic side-chain “C-region” was written by Walpole, Christopher S. J.;Wrigglesworth, Roger;Bevan, Stuart;Campbell, Elizabeth A.;Dray, Andy;James, Iain F.;Masdin, Kay J.;Perkins, Martin N.;Winter, Janet. And the article was included in Journal of Medicinal Chemistry in 1993.Safety of 12-Methoxy-12-oxododecanoic acid This article mentions the following:

Structural variants of the hydrophobic side chain (C region) of the capsaicin mol. have been incorporated into a series of vanillylamides and vanillylthioureas. These compounds have been tested in an in vitro assay for agonism (⁴⁵Ca²⁺ influx into dorsal root ganglia neurons), previously shown to be predictive of analgesic activity. The results of this study have established the requirement for a hydrophobic substituent of limited size (molar refractivity, MR, <55) in order to obtain high potency. Combination of the information about the C-region of the capsaicin mol. with studies of the other parts of the mol. provides a rational basis for the design of compounds of increased potency. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0Safety of 12-Methoxy-12-oxododecanoic acid).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Safety of 12-Methoxy-12-oxododecanoic acid

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Selective monomethyl esterification of dicarboxylic acids by use of monocarboxylate chemisorption on alumina was written by Ogawa, Haruo;Chihara, Teiji;Taya, Kazuo. And the article was included in Journal of the American Chemical Society in 1985.HPLC of Formula: 3903-40-0 This article mentions the following:

The application of alumina as a solid support affords a new procedure for selective monoesterification of dicarboxylic acids. Thus, terephthalic acid (I), isophthalic acid, cis– and trans-1,4-cyclohexanedicarboxylic acids, and aliphatic dicarboxylic acids give the corresponding monomethyl esters quant. with diazomethane. Selective monomethyl esterification of phthalic acid is not successful on alumina, probably as a consequence of the close proximity of the two carboxyl groups and the forced orientation of the second group when one is adsorbed. Me₂SO₄ and p-MeC₆H₄N:NNHMe were also effective for the selective monomethyl esterification of I by this procedure. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0HPLC of Formula: 3903-40-0).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.HPLC of Formula: 3903-40-0

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics