Category: alcohols-buliding-blocks

Dehghan, Mohamed Hassan G. published the artcileAssessment of Isomalt for Colon-Specific Delivery and Its Comparison with Lactulose, Related Products of alcohols-buliding-blocks, the main research area is isomalt colon drug delivery system amino salicylic acid bioavailability.

Lactulose is used as a triggering substance in a unique colon-specific delivery technol. called CODESTM. Colonic microflora degrades lactulose and forms short-chain fatty acids to activate the CODESTM system. However, lactulose has been reported to cause a Maillard-type reaction with substances containing primary or secondary amino groups that may produce carcinogenic compounds Thus, the aim of this study was to look into the possibility to substitute lactulose with isomalt for fabrication of CODESTM. The in vitro degradation of both sugars before incorporating them into the CODESTM system was evaluated with the help of rat caecal microflora. The results showed that isomalt was less efficient with regard to its rate and extent of degradation into short-chain fatty acids by the microflora compared to lactulose. However, the in vitro dissolution study did not show a significant difference in the performance between lactulose and isomalt when they were incorporated sep. in CODESTM. A similar result was also obtained in the in vivo study. Based on the above results, isomalt could be used as an alternative to lactulose for colonic delivery system utilizing the principles of CODESTM.

AAPS PharmSciTech published new progress about Biocompatibility. 64519-82-0 belongs to class alcohols-buliding-blocks, name is (3R,4R,5R)-6-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexane-1,2,3,4,5-pentaol, and the molecular formula is C12H24O11, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tao, Yangchun published the artcilePseudo target release behavior of simvastatin through pH-responsive polymer based on dynamic imine bonds: Promotes rapid proliferation of osteoblasts, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is simvastatin release polymer pH osteoblast cell proliferation; Controlled release; Simvastatin; Stimuli-responsive polymer; pH-responsive polymer.

In this article, a simvastatin loaded pentaerythritol tetra(3-mercaptopropionate)-allylurea-poly(ethylene glycol) (SIM-loaded PETMP-AU-PEG) polymer with excellent biocompatibility by means of in-situ loading method was synthesized. The presence of the imine bonds has given the polymer system an excellent response performance to weak acidic environment. Specifically, for the SIM-loaded polymer, the simvastatin cumulative release dose is only 2.2% in the first 2 h, and the first 32 h of the cumulative release dose is less than 10% in pH 7.4; However, in pH 6.0, the first 2 h of the cumulative release dose is 65.2%, and the first 32 h of the cumulative release dose is almost 100%. MC3T3-E1 osteoblast cell culture experiments show that the SIM-loaded polymer at pH 6.0 can accelerate the proliferation of osteoblasts significantly, which is expected to promote the rapid proliferation of bone cells in clin. applications and accelerate the healing of the lesion region.

Materials Science & Engineering, C: Materials for Biological Applications published new progress about Biocompatibility. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Pan, Kai published the artcilePhoto-Cross-Linked Polycarbonate Coating with Surface-Erosion Behavior for Corrosion Resistance and Cytocompatibility Enhancement of Magnesium Alloy, Synthetic Route of 7575-23-7, the main research area is magnesium alloy photocrosslinking polycarbonate coating corrosion resistance; corrosion resistance; cytocompatibility; magnesium alloy; surface-eroding coating; thiol−ene photo-cross-linking.

Absorbable magnesium (Mg) materials are promising for medical implant applications. However, their corrosion rate and potential toxicity remain a challenge. Herein, a photo-cross-linked coating with suitable durability and unique surface-eroding behavior for enhancement of anticorrosion property and cytocompatibility of AZ31 Mg alloy was developed. The biodegradable allyl-functional polycarbonate, poly[(5-methyl-5-allyloxycarbonyl-1,3-propanediol carbonate)-co-(trimethylene carbonate)] [P(MAC-co-TMC), PMT], was first synthesized by ring-opening copolymerization The PMT copolymer, pentaerythritol tetrakis(3-mercaptopropionate), and a photoinitiator were then applied on AZ31 Mg alloy by dip coating, and these films were cross-linked via the subsequent photoinitiated thiol-ene click reaction. The poly(L-lactide) (PLLA) and poly(1,3-trimethylene carbonate) (PTMC) coatings without crosslinking were prepared and used as control. Our results show that the cross-linked PMT coatings exhibited superior mech. properties compared with PLLA and PTMC coatings. Meanwhile, the surface-erosion behavior of the cross-linked PMT coatings remained, as confirmed by SEM anal. As a result, the cross-linked PMT-coated Mg alloy showed lower corrosion rates, better in vitro corrosion resistance, and much lower cytotoxicity, compared with bare Mg and ones coated with PLLA and PTMC coatings. Results indicate that the cross-linked PMT coatings with unique surface-erosion behavior and good cytocompatibility might be promising to improve the safety and success rate of Mg-based devices and implants.

ACS Applied Bio Materials published new progress about Biocompatibility. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Synthetic Route of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vieira, Nicole S. M. published the artcileHuman cytotoxicity and octanol/water partition coefficients of fluorinated ionic liquids, Name: n-Octanol, the main research area is fluorinated ionic liquid cytotoxicity octanol water partition coefficient; 1-Octanol/water partition coefficient; Cytotoxicity; Fluorinated ionic liquids; Hydrophilic/lipophilic balance.

The use of fluorinated ionic liquids (FILs) as novel materials in biol. and pharmaceutical applications is an emerging research field. The knowledge of their cytotoxicity and that of 1-octanol/water partition coefficients are essential to assess their environmental risks, to estimate their toxicity and activity, or the hydrophilic/lipophilic balance, as well as to explore their properties as solvents in extraction processes or for successful drug design. The study of the cytotoxicity in four different human cell lines and the exptl. measurement of the partition coefficient between 1-octanol and water (Po/w), using the slow-stirring method, were carried out for several FILs. In both studies, the effect of the cation ([C2C1Im]+, [C2C1py]+, [C4C1pyr]+, [N1112(OH)]+, or [N4444]+), the cationic alkyl side-chain length ([CnC1Im]+, with n = 2, 6, 8 or 12), and the anionic fluorinated chain length/anionic fluorinated domain size ([C4F9SO3] ̅, [C8F17SO3] ̅, or [N(C4F9SO3)2] ̅) were analyzed. The results reveal that both toxicity and partition properties are mainly influenced by the size of the cationic hydrogenated alkyl side-chain and that of the anionic fluorinated domain. The intrinsic tuneability of the FILs allows for their selection according to the lipophilic or hydrophilic character of the target biol. system under consideration. The toxicity studies corroborate the biocompatible nature of some FILs tested in this work. Along, for all the FILs under study Po/w < 1.00. Accordingly, a decadic logarithm of the bioconcentration factor in fish of 0.5 would be estimated, which is below the regulatory endpoint used by regulatory agencies. Chemosphere published new progress about Biocompatibility. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Name: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Shaha, Rajib K. published the artcileBiocompatible liquid-crystal elastomers mimic the intervertebral disc, Quality Control of 7575-23-7, the main research area is liquid crystalline elastomer tension compression biocompatibility intervertebral disk implant; Annulus fibrosus; Biocompatibility; Biomaterial; Intervertebral disc implant; Liquid crystal elastomer; Nucleus pulposus; Porous LCE; Wettability.

The hierarchical and anisotropic mech. behavior requirement of load-bearing soft tissues limits the utility of conventional elastomeric materials as a replacement for soft-tissue materials. Liquid-crystal elastomers (LCEs) have the potential to excel in this regard owing to its unique combination of mesogenic order in an elastomeric network. In this study, the mech. behavior of the LCEs relevant to load-bearing biomedical applications was explored. LCEs with different network orientations (i.e., mesogen alignments) were investigated by fabricating the LCEs with polydomain and monodomain configurations. The polydomain and monodomain LCEs with the same degree of network crosslinking demonstrated diverse mech. behavior, ranging from highly stiff and elastic nature to high damping capacity, depending on the loading direction with respect to the network alignment. The LCEs were also capable of matching the anisotropic mech. behavior of an intervertebral disk. Addnl. studies were conducted on the in vivo biol. response of LCEs upon s.c. implantation, as well as on the effect of the exposure to an in vitro simulated physiol. environment on the mech. behavior. The LCEs mech. response was negligibly affected when exposed to biomedically relevant conditions. Furthermore, the solid and porous LCEs did not show any adverse effect on the surrounding tissues when implanted s.c. in rats. The biol. response allows for tissue ingrowth and helps illustrate their utility in implantable biol. devices. Finally, the utility of LCEs to mimic the mech. function of biol. tissue such as intervertebral disk was demonstrated by fabricating a proof of concept total disk replacement device.

Journal of the Mechanical Behavior of Biomedical Materials published new progress about Biocompatibility. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Quality Control of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Thijssen, Quinten published the artcileFrom Chain Growth to Step Growth Polymerization of Photoreactive Poly-ε-Caprolactone: The Network Topology of Bioresorbable Networks as Tool in Tissue Engineering, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is photoreactive polycaprolactone step growth polymerization thermal mech biol property.

Control of the network topol. by selection of an appropriate crosslinking chem. is introduced as a new strategy to improve the elasticity and toughness of bioresorbable networks. The development of novel photocrosslinkable and bioresorbable oligomers is essential for the application of light-based 3D-printing techniques in the context of tissue engineering. Although light-based 3D-printing techniques are characterized by an increased resolution and manufacturing speed as compared to extrusion-based 3D-printing, their application remains limited. Via chem. modification, poly-ε-caprolactone (PCL) is functionalized with photoreactive end groups such as acrylates, alkenes, and alkynes. Based on these precursors, networks with different topologies are designed via chain growth polymerization, step growth polymerization, or a combination thereof. The influence of the network topol. and the concomitant crosslinking chem. on the thermal, mech., and biol. properties are elucidated together with their applicability in digital light processing (DLP). Photocrosslinkable PCL with an elongation at break of 736.3 ± 47% and an ultimate strength of 21.3 ± 0.8 MPa is realized, which is approx. tenfold higher compared to the current state-of-the-art. Finally, extremely elastic DLP-printed dog bones are developed which can fully retrieve their initial length upon stress relieve at an elongation of 1000%.

Advanced Functional Materials published new progress about Biocompatibility. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bermejo, Jesus F. published the artcileWater-soluble carbosilane dendrimers: synthesis, biocompatibility and complexation with oligonucleotides; evaluation for medical applications, Related Products of alcohols-buliding-blocks, the main research area is carbosilane dendrimer biocompatibility oligonucleotide plasmid gene delivery.

Novel amine- or ammonium-terminated carbosilane dendrimers of type nG-[Si{OCH2(C6H3)-3,5-(OCH2CH2NMe2)2}]x, nG-[Si{O(CH2)2N(Me)(CH2)2NMe2}], and nG-[Si{(CH2)3NH2}]x or nG-[Si{OCH2(C6H3)-3,5-(OCH2CHNMe3+I-)2}]x, nG-[Si{O(CH2)2N(Me)(CH2)2NMe3+I-}]x, and nG-[Si{(CH2)3NH3+Cl-}]x have been synthesized and characterized up to the third generation by two strategies: (1) alcoholysis of Si-Cl bonds with amino alcs. and subsequent quaternization with MeI, and (2) hydrosilylation of allylamine with Si-H bonds of the dendritic systems and subsequent quaternization with HCL. Quaternized carbosilane dendrimers are soluble in water, although degradation is apparent due to hydrolysis of Si-O bonds. However, dendrimers containing Si-C bonds are water-stable. The biocompatibility of the second-generation dendrimers in primary cell cultures of peripheral blood mononuclear cells (PBMCs) and erythrocytes have been analyzed, and they show good toxicity profiles over extended periods. In addition, we describe a study on the interactions between the different carbosilane dendrimers and DNA oligodeoxynucleotides (ODNs) and plasmids along with a comparative anal. of their toxicity. They can form complexes with DNA ODNs and plasmids at biocompatible doses via electrostatic interaction. Also a preliminary transfection assay has been accomplished. These results demonstrate that the new ammonium-terminated carbosilane dendrimers are good base mols. to be considered for biomedical applications.

Chemistry – A European Journal published new progress about Biocompatibility. 2212-32-0 belongs to class alcohols-buliding-blocks, name is N2-(2-Hydroxyethyl)-N1,N1,N2-trimethyl-1,2-ethylenediamine, and the molecular formula is C7H18N2O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Han published the artcileDesign of 2,5-furandicarboxylic based polyesters degraded in different environmental conditions: Comprehensive experimental and theoretical study, Recommanded Product: 2,2′-Oxydiacetic acid, the main research area is furandicarboxylic acid polyester seawater biodegradability mol dynamic simulation; Catalytic mechanism; Degradable polyesters; Enzymatic degradation; Hydrolytic reaction; MD simulation.

Nowadays, the promotion and application of aliphatic-aromatic copolyesters, such as poly (butylene adipate-co-terephthalate) (PBAT), are growing into a general trend. Although the structures of diacids exerted substantial impacts on degradation behavior, the underlying mechanisms have rarely been studied. In this work, 2,5-Furandicarboxylic acid was combined with succinic acid (PBSF), adipic acid (PBAF) and diglycolic acid (PBDF) to prepare three kinds of copolyesters. They showed unique degradation behaviors in buffer, enzyme environment and artificial seawater. These characteristics are closely related to the structural compositions of diacids. PBAFs displayed impressive biodegradability when catalyzed by Candida antarctica lipase B (CALB), while the more hydrophilic PBDFs exhibited faster hydrolysis in both buffer and artificial seawater. PBSFs, with hydrophobic and short segments, obtained a relatively slower rate of hydrolysis and enzymic degradation The reactivity sites and hydrolytic pathway were revealed by the combination of DFT calculation and Fukui function anal. MD simulations, QM/MM optimizations and theozyme calculations showed that PBAF-CALB was prone to form a pre-reaction state, leading to the reduced energy barrier in the acylation process. This work revealed the effects of different structural features of diacids on polymer degradation and paved a way to design target biodegradable polymers in different degradation conditions.

Journal of Hazardous Materials published new progress about Biodegradability. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2′-Oxydiacetic acid, and the molecular formula is C4H6O5, Recommanded Product: 2,2′-Oxydiacetic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Brunerie, P. published the artcileBioconversion of citronellol by Botrytis cinerea, Application of 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol, the main research area is must citronellol metabolism Botrytis.

Bioconversion of citronellol (I) was studied with 4 strains of B. cinerea. Using grape must, predominant transformation of I to 2,6-dimethyl-1,8-octanediol (II) and (E)-2,6-dimethyl-2-octene-1,8-diol 3 was observed In minor amounts 2,6-dimethyl-2,8-octanediol (III), 2 p-menthane-3,8-diol isomers (IV and V), (Z)-2,6-dimethyl-2-octene-1,8-diol, isopulegol, 2-methyl-2-hepten-6-on-1-ol, and 2-methyl-γ-butyrolactone were found. Using a small amount of grape must in a synthetic medium the bioconversion products II, III, IV, and V were absent, but addnl. 2-methyl-2-heptene-6-one, 2-methyl-2-heptene-6-ol, and citronellic acid were detected. The results obtained were strongly dependent on the strains used; 1 strain did not show any metabolic activity against I.

Applied Microbiology and Biotechnology published new progress about Botrytis cinerea. 42822-86-6 belongs to class alcohols-buliding-blocks, name is 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol, and the molecular formula is C10H20O2, Application of 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jeong, Changyoon published the artcileReal-time in situ monitoring of manufacturing process and CFRP quality by relative resistance change measurement, Quality Control of 7575-23-7, the main research area is CFRP manufacturing process in situ monitoring sensor elec resistance.

In situ monitoring of resin flow, impregnation of carbon fiber fabrics, and curing during composite manufacturing are very important for determining the quality of composite parts. In conventional methods, sensors, such as optical fibers and strain gages, are bonded to or embedded in the composites for measuring the changes in mech. and chem. properties. Although they can detect resin curing behavior and impregnation of carbon fibers, they may adversely affect the manufacturing process or structural integrity of the composites. In this study, carbon fiber itself was used as a sensor that minimizes the degradation of mech. properties and increases the efficiency of monitoring the manufacturing process. The change in the elec. resistance of carbon fiber fabrics was monitored during the various manufacturing processes when the resin flowed through the carbon fiber fabric and curing progressed. The effectiveness of this monitoring method was confirmed, and it is expected to be applicable in monitoring the quality of the finished composite parts.

Polymer Testing published new progress about Cables and Wires. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Quality Control of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts