Tag: 300-400

In 1984,Liquid Crystals and Ordered Fluids included an article by Bone, M. F.; Price, A. H.; Clark, M. G.; McDonnell, D. G.. SDS of cas: 74305-48-9. The article was titled 《Dielectric studies of monoester and diester nematogens》. The information in the text is summarized as follows:

The permittivities of several monoester nematogens were studied in the nematic and isotropic phases at frequencies ≤18 GHz. The dielec. relaxations observed in the nematic phase agreed with theor. predictions for a rigid nematogen. Values for the nematic order parameter and the angle between the “”long axis”” of the mol. and its elec. dipole were estimated from the data, and the definition of the “”long axis”” in the mol. theory of nematics is discussed. Two distinct relaxation frequencies were observed in the isotropic phase of substituted Ph benzoates, probably due to anisotropic rotational mol. diffusion, indicative of residual nematiclike short-range order. This interpretation is supported by quant. comparison with nematic phase data, and by data on a benzene solution and the nonnematic Ph benzoate parent. Data on cyclohexane carboxylate esters reveal interesting similarities and contrasts with the benzoate esters. Recent developments in liquid-crystal materials for 2-frequency-addressed devices are considered in the context of the data on monoesters together with studies of dielec. relaxation in monoester/diester mixtures4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9SDS of cas: 74305-48-9) was used in this study.

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market.SDS of cas: 74305-48-9

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

《Unprecedented Intramolecular Association-Induced Fluorescence in Tryptophan-Conjugated Peptidomimetics》 was written by Juneja, Shreya; Singh, Hanuman; Palui, Sayan; Trivedi, Shruti; Singh, Sharan S.; Haridas, V.; Pandey, Siddharth. Recommanded Product: tert-Butyl 7-benzyl-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate And the article was included in Journal of Physical Chemistry B on April 11 ,2019. The article conveys some information:

We report herewith tryptophan (Trp)-conjugated peptidomimetics that show intramol. through-space association between the Trp units. Our investigation revealed that the proximal placement of Trp can lead to the emergence of a new and unanticipated fluorescent entity constituting a Trp-Trp dimer. Proton-induced modulation of fluorescence is a consequence of this work. Investigations with control compounds unequivocally revealed that the fluorescence property is not originated from the localized excited state but from the unprecedented Trp-Trp intramol. dimer in the ground state itself. The present findings will initiate the biophys. scientists to have a relook at the fluorescence properties of Trp-containing proteins. After reading the article, we found that the author used tert-Butyl 7-benzyl-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-71-8Recommanded Product: tert-Butyl 7-benzyl-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate)

tert-Butyl 7-benzyl-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-71-8) belongs to esters. Esters are more polar than ethers but less polar than alcohols. Recommanded Product: tert-Butyl 7-benzyl-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.

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

On December 1, 2013, Eibl, Christoph; Munoz, Lenka; Tomassoli, Isabelle; Stokes, Clare; Papke, Roger L.; Guendisch, Daniela published an article.Computed Properties of 227940-70-7 The title of the article was The 3,7-diazabicyclo[3.3.1]nonane scaffold for subtype selective nicotinic acetylcholine receptor ligands. Part 2: Carboxamide derivatives with different spacer motifs. And the article contained the following:

3,7-Diazabicyclo[3.3.1]nonane (bispidine) based nicotinic acetylcholine receptor (nAChR) ligands, e.g., I, have been synthesized and evaluated for nAChRs interaction. Diverse spacer motifs were incorporated between the hydrogen bond acceptor (HBA) part and a variety of substituted (hetero)aryl moieties. Bispidine carboxamides bearing spacer motifs often showed high affinity in the low nanomolar range and selectivity for the α4β2* nAChR. Compound I and the other two tested compounds with Ki values of about 1 nM displayed the highest affinities for α4β2* nAChR. All evaluated compounds are partial agonists or antagonists at α4β2*, with reduced or no effects on α3β4* with the exception of compound I (agonist), and reduced or no effect at α7 and muscle subtypes. The experimental process involved the reaction of tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-70-7).Computed Properties of 227940-70-7

The Article related to brain disease, central nervous system agents, central nervous system disease, laburnum anagyroides (seeds and pods), mathematical methods (acd/adme and acd/physchem), nicotinic agonists, nicotinic antagonists, structure-activity relationship and other aspects.Computed Properties of 227940-70-7

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

On December 1, 2013, Eibl, Christoph; Tomassoli, Isabelle; Munoz, Lenka; Stokes, Clare; Papke, Roger L.; Guendisch, Daniela published an article.Recommanded Product: tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate The title of the article was The 3,7-diazabicyclo[3.3.1]nonane scaffold for subtype selective nicotinic acetylcholine receptor (nAChR) ligands. Part 1: The influence of different hydrogen bond acceptor systems on alkyl and (hetero)aryl substituents. And the article contained the following:

3,7-Diazabicyclo[3.3.1]nonane is a naturally occurring scaffold interacting with nicotinic acetylcholine receptors (nAChRs). When one nitrogen of the 3,7-diazabicyclo[3.3.1]nonane scaffold was implemented in a carboxamide motif displaying a hydrogen bond acceptor (HBA) functionality, compounds with higher affinities and subtype selectivity for α4β2* were obtained. The nature of the HBA system (carboxamide, sulfonamide, urea) had a strong impact on nAChR interaction. High affinity ligands for α4β2* possessed small alkyl chains, small un-substituted hetero-aryl groups or para-substituted Ph ring systems along with a carboxamide group. Electrophysiol. responses of selected 3,7-diazabicyclo[3.3.1]nonane derivatives to Xenopus oocytes expressing various nAChR subtypes showed diverse activation profiles. Compounds with strongest agonistic profiles were obtained with small alkyl groups whereas a shift to partial agonism/antagonism was observed for aryl substituents. The experimental process involved the reaction of tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-70-7).Recommanded Product: tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate

The Article related to blood-brain barrier, brain, drug transport, homo sapiens, human, lipophilicity, nicotinic receptors role: bsu (biological study, unclassified), biol (biological study), structure-activity relationship, nicotinic receptor-binding and other aspects.Recommanded Product: tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate

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

Quality Control of 4-n-Pentylphenyl-4-pentylbenzoateOn September 30, 1987 ,《Reentrant nematic and injected smectic behavior in binary mixtures including those of terminally nonpolar compounds》 was published in Molecular Crystals and Liquid Crystals. The article was written by Chan, L. K. M.; Gray, G. W.; Lacey, D.; Srithanratana, T.; Toyne, K. J.. The article contains the following contents:

Some examples of injected smectic behavior (SB and SA) for binary mixtures of strong terminally polar mesogens with a range of terminally nonpolar esters are presented. Variations in the strength of the injected behavior are discussed. Mixtures of terminally nonpolar 4,4″”-dialkyl-2′-fluoro-p-terphenyls (I) with CN-substituted mesogens were also studied and provide an example of injection of SA and SE phases. Binary mixtures consisting solely of homologs of I can exhibit reentrant nematic behavior, providing further evidence that reentrant phenomena are not a special feature of terminally polar mesogens and their mixtures An isomeric mixture of 2 compounds of I also gives an injected SC phase, and enhanced SC properties are recorded for other mixtures of I. Mixtures involving alkyl/alkoxy analogs of I also provide examples of SC phase injection or enhancement, and in 1 case some evidence for injected SI behavior. The experimental process involved the reaction of 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Quality Control of 4-n-Pentylphenyl-4-pentylbenzoate)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters.Quality Control of 4-n-Pentylphenyl-4-pentylbenzoate They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.

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

Safety of 4-n-Pentylphenyl-4-pentylbenzoateOn May 31, 1985, Soileau, M. J.; Guha, Shekhar; Williams, William E.; Van Stryland, E. W.; Vanherzeele, H.; Pohlmann, J. L. W.; Sharp, E. J.; Wood, G. published an article in Molecular Crystals and Liquid Crystals. The article was 《Studies of the nonlinear switching properties of liquid crystals with picosecond pulses》. The article mentions the following:

A comparative study of self-focusing in 7 liquid crystals using picosecond 0.53 and 1.06 μm pulses is presented. MEBBA has the highest nonlinearity at 0.53 μm as determined in an optical power limiting experiment This limiting appears to be due to nonlinear refraction enhanced by 2-photon absorption. The experimental part of the paper was very detailed, including the reaction process of 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Safety of 4-n-Pentylphenyl-4-pentylbenzoate)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. Safety of 4-n-Pentylphenyl-4-pentylbenzoate

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

《Effects of molecular length on nematic mixtures – IV: Structure effects on viscosity of ester mixtures》 was published in Liquid Crystals and Ordered Fluids in 1984. These research results belong to Margerum, J. David; Wong, Siu May; Jensen, John E.; Van Ast, Camille. COA of Formula: C23H30O2 The article mentions the following:

The flow viscosity (η) of nematic ester mixtures was studied as a function of average mol. length (L̅), chem. structure, and temperature When L̅ is increased by using longer alkyl end groups, the η of less polar mixtures increases while the η of more polar mixtures changes slightly or even decreases. However, when cybotactic nematic characteristics occur with increased L̅, then η increases sharply. η Was measured for 18 different classes of ester structures used as additives in 4-alkoxyphenyl 4-alkylbenzoate (RO-R’) mixtures as fixed values of L̅ for both additive components and mixtures Approx. class viscosities (ηclass) at 25° were assigned to each of the 18 classes. The η25° of other ester mixtures is estimated by summing ηclass times the mole fraction of that class present in the mixture These ηcalc values are generally within 10% of the actual η25° for multicomponent ester mixtures containing some RO-R’ components. Temperature variations often result in a nonlinear plot for log η vs T-1 of ester mixtures The apparent activation energy between 25 and 40° generally increases strongly with the η of the mixture In addition to this study using 4-n-Pentylphenyl-4-pentylbenzoate, there are many other studies that have used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9COA of Formula: C23H30O2) was used in this study.

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters.COA of Formula: C23H30O2 They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.

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

In 1983,Molecular Crystals and Liquid Crystals included an article by Bradshaw, M. J.; Raynes, E. P.. Synthetic Route of C23H30O2. The article was titled 《The bend and splay elastic constants on approaching an injected smectic phase》. The information in the text is summarized as follows:

The splay and bend elastic constants (k11 and k33) of a series of hybrid mixtures exhibiting an injected smectic phase were measured. Large pretransitional increases in k11, k33 and k33/k11 close to the smectic phase were observed Outside this pretransitional region k11 increased and k33 decreased on approaching the injected smectic phase by changing composition or temperature The results were attributed to an enhancement in the smectic-like ordering in agreement with a recent theory. In the experiment, the researchers used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Synthetic Route of C23H30O2)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market.Synthetic Route of C23H30O2

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

In 1983,Molecular Crystals and Liquid Crystals included an article by Osman, Maged A.; Huynh-Ba, T.. Category: esters-buliding-blocks. The article was titled 《Stable liquid crystals with large negative dielectric anisotropy – II》. The information in the text is summarized as follows:

2,3-Dicyano-4-n-pentylphenol was synthesized. The mesomorphic properties of its benzoic and cyclohexane cyclohexane carboxylic acid esters are described. The effect of lateral substituents on the thermodn. stability of the mesophase is discussed. The esters of this phenol are photochem. stable liquid crystals with large neg. Δε. Their clearing points are relatively high but their viscosities are also expected to be relatively high. After reading the article, we found that the author used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Category: esters-buliding-blocks)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.Category: esters-buliding-blocks

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

《Peculiar orientation of nematic liquid crystals on rubbed polyvinylimidazole》 was written by Frunza, S.; Beica, T.; Moldovan, R.; Zgura, J.; Frunza, L.. Recommanded Product: 74305-48-9 And the article was included in Journal of Optoelectronics and Advanced Materials on August 31 ,2005. The article conveys some information:

Alignment properties of rubbed films of polyvinylimidazole were studied by observing with the polarizing microscope the features of the nematic liquid crystal (LC) droplets onto these layers. The observing of the droplets can reveal the direction of easy axis on the alignment substrate not only in the case of LC having the director normal to the LC/air interface but also in the case of the director tangent to this interface, when no disclination line could be seen. Some of the LCs are oriented parallel to the rubbing direction, but the other LCs are perpendicularly oriented. This peculiar behavior is at variance to that found on rubbed layers of poly vinyl alc. The role of the end-groups in the structure of the LCs on the alignment properties is discussed. In addition to this study using 4-n-Pentylphenyl-4-pentylbenzoate, there are many other studies that have used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Recommanded Product: 74305-48-9) was used in this study.

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.Recommanded Product: 74305-48-9

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