Category: 534-03-2

Lee, Seung Yong; Jeon, Seong Ik; Sim, Sung Bo; Byun, Youngro; Ahn, Cheol-Hee published an article in 2021. The article was titled 《A supramolecular host-guest interaction-mediated injectable hydrogel system with enhanced stability and sustained protein release》, and you may find the article in Acta Biomaterialia.Electric Literature of C3H9NO2 The information in the text is summarized as follows:

Injectable hydrogels have been studied as drug delivery systems because of their minimal invasiveness and sustained drug release properties. Pluronic F127, consisting of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymers, exhibits thermo-responsive properties and hence is injectable due to its rapid sol-gel transition. Unmodified Pluronic F127-based hydrogels, however, have limited long-term stability and controllable release of drugs entrapped within them. In this study, host-guest interactions between adamantane-conjugated Pluronic F127 (F127-Ad) and polymerized β-cyclodextrin (CDP) were employed to develop a hydrogel-based protein delivery system. Single or multiple adamantane units were successfully introduced at the termini of Pluronic F127 with a 100% conversion yield, and the synthesized F127-Ad polymer produced a phys. crosslinked micelle-packing structure when mixed with CDP. As the number of adamantanes at the terminal ends of Pluronic F127 increased, the critical gelation concentration of F127-Ad/CDP hydrogel decreased from 15 to 6% (w/v). The F127/CDP hydrogel was able to maintain its structure even with lower polymer content, and its injectability improved with a reduction of the hydrogel viscosity. The long-term stability of F127/CDP hydrogels was evaluated in vitro and in vivo, and it was demonstrated that the s.c. injected hydrogel did not disintegrate for up to 30 d. Throughout the drug release test using gelatin and insulin as model drugs, it was demonstrated that their release rates could be regulated via complexation between the protein drugs and the β-cyclodextrin mols. inside the hydrogel. In conclusion, the F127-Ad/CDP hydrogel is expected to be a versatile protein delivery system with controllable durability and drug release characteristics. Pluronic F127 is one of the widely studied polymeric materials for thermo-sensitive injectable hydrogels due to its high biocompatibility and rapid sol-gel transition. Since the Pluronic F127-based hydrogel has some limitations in its long-term stability and mech. property, it is inevitable to modify its structure for the application to drug delivery. In this study, mono- or multi- adamantane-conjugated Pluronic F127s were synthesized and mixed with β-cyclodextrin polymers to form hydrogels with host-guest interaction-mediated micelle-packing structures. The host-guest interaction introduced into the hydrogel system endowed it a sustained protein drug release behavior as well as high durability in vitro and in vivo. By increasing the number of adamantane mols. at the end of the Pluronic F127, both the stability and injectability of the hydrogel could be also modulated. In the part of experimental materials, we found many familiar compounds, such as 2-Aminopropane-1,3-diol(cas: 534-03-2Electric Literature of C3H9NO2)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Reaction with nitrous acid (HNO2), which functions as an acylating agent that is a source of the nitrosyl group (―NO), converts aliphatic primary amines to nitrogen and mixtures of alkenes and alcohols corresponding to the alkyl group in a complex process. This reaction has been used for analytical determination of primary amino groups in a procedure known as the Van Slyke method.Electric Literature of C3H9NO2

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《Functional and structural characterization of the UDP-glucose dehydrogenase involved in capsular polysaccharide biosynthesis from Campylobacter jejuni》 was written by Riegert, Alexander S.; Raushel, Frank M.. Application In Synthesis of 2-Aminopropane-1,3-diolThis research focused onUDP glucose dehydrogenase Cj1441 Campylobacter structure capsular polysaccharide. The article conveys some information:

Campylobacter jejuni is a pathogenic organism that can cause campylobacteriosis in children and adults. Most commonly, campylobacter infection is brought on by consumption of raw or undercooked poultry, unsanitary drinking water, or pet feces. Surrounding the C. jejuni bacterium is a coat of sugar mols. known as the capsular polysaccharide (CPS). The capsular polysaccharide can be very diverse among the different strains of C. jejuni, and this diversity is considered important for evading the host immune system. Modifications to the CPS of C. jejuni NCTC 11168 include O-methylation, phosphoramidylation, and amidation of glucuronate with either serinol or ethanolamine. The enzymes responsible for amidation of glucuronate are currently unknown. In this study, Cj1441, an enzyme expressed from the CPS biosynthetic gene cluster in C. jejuni NCTC 11168, was shown to catalyze the oxidation of UDP-α-D-glucose into UDP-α-D-glucuronic acid with NAD+ as the cofactor. No amide products were found in an attempt to determine whether the putative thioester intermediate formed during the oxidation of UDP-glucose by Cj1441 could be captured in the presence of added amines. The three-dimensional crystal structure of Cj1441 was determined in the presence of NAD+ and UDP-glucose bound in the active site of the enzyme (Protein Data Bank entry 7KWS). A more thorough bioinformatic anal. of the CPS gene cluster suggests that the amidation activity is localized to the t-terminal half of Cj1438, a bifunctional enzyme that is currently annotated as a sugar transferase. After reading the article, we found that the author used 2-Aminopropane-1,3-diol(cas: 534-03-2Application In Synthesis of 2-Aminopropane-1,3-diol)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Halogenation, in which one or more hydrogen atoms of an amine is replaced by a halogen atom, occurs with chlorine, bromine, and iodine, as well as with some other reagents, notably hypochlorous acid (HClO). With primary amines the reaction proceeds in two stages, producing N-chloro- and N,N-dichloro-amines, RNHCl and RNCl2, respectively. With tertiary amines, an alkyl group may be displaced by a halogen.Application In Synthesis of 2-Aminopropane-1,3-diol

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銆奊raphene layers functionalized with a Janus pyrrole-based compound in natural rubber nanocomposites with improved ultimate and fracture properties銆?was written by Prioglio, Gea; Agnelli, Silvia; Conzatti, Lucia; Balasooriya, Winoj; Schrittesser, Bernd; Galimberti, Maurizio. Application In Synthesis of 2-Aminopropane-1,3-diol And the article was included in Polymers (Basel, Switzerland) in 2020. The article conveys some information:

The ultimate properties and resistance to fracture of nanocomposites based on poly(1,4-cis-isoprene) from Hevea Brasiliensis (natural rubber, NR) and a high surface area nanosized graphite (HSAG) were improved by using HSAG functionalized with 2-(2,5-dimethyl-1H-pyrrol-1-yl)propane-1,3-diol (serinol pyrrole) (HSAG-SP). The functionalization reaction occurred through a domino process, by simply mixing HSAG and serinol pyrrole and heating at 180掳C. The polarity of HSAG-SP allowed its dispersion in NR latex and the isolation of NR/HSAG-SP masterbatches via coagulation. Nanocomposites, based either on pristine HSAG or on HSAG-SP, were prepared through traditional melt blending and cured with a sulfur-based system. The samples containing HSAG-SP revealed ultimate dispersion of the graphitic filler with smaller aggregates and higher amounts of few layers stacks and isolated layers, as revealed by transmission electron microscopy. With HSAG-SP, better stress and elongation at break and higher fracture resistance were obtained. Indeed, in the case of HSAG-SP-based composites, fracture occurred at larger deformation and with higher values of load and, at the highest filler content (24 phr), deviation of fracture propagation was observed These results have been obtained with a moderate functionalization of the graphene layers (about 5%) and normal lab facilities. This work reveals a simple and scalable way to prepare tougher NR-based nanocomposites and indicates that the dispersion of a graphitic material in a rubber matrix can be improved without using an extra-amount of mech. energy, just by modifying the chem. nature of the graphitic material through a sustainable process, avoiding the traditional complex approach, which implies oxidation to graphite oxide and subsequent partial reduction In the experimental materials used by the author, we found 2-Aminopropane-1,3-diol(cas: 534-03-2Application In Synthesis of 2-Aminopropane-1,3-diol)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime.Typically the presence of an amine functional group is deduced by a combination of techniques, including mass spectrometry as well as NMR and IR spectroscopies. 1H NMR signals for amines disappear upon treatment of the sample with D2O. In their infrared spectrum primary amines exhibit two N-H bands, whereas secondary amines exhibit only one.Application In Synthesis of 2-Aminopropane-1,3-diol

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Achinivu, Ezinne C.; Frank, Skye; Baral, Nawa Raj; Das, Lalitendu; Mohan, Mood; Otoupal, Peter; Shabir, Emara; Utan, Sean; Scown, Corinne D.; Simmons, Blake A.; Gladden, John published their research in Green Chemistry in 2021. The article was titled 《Alkanolamines as Dual Functional Solvents for Biomass Deconstruction and Bioenergy Production》.SDS of cas: 534-03-2 The article contains the following contents:

This work demonstrates the feasibility of applying dual functional solvents called alkanolamines towards the conversion of biomass into biofuels. Alkanolamines have the potential to serve as effective pretreatment solvents that promote a low energy intensity, process intensification, and downstream conversion via a cost-effective route. Several key factors were considered to effectively integrate the pretreatment technol. into a biorefinery, including solvent screening (both exptl. and computationally), feedstock screening (capturing the effectiveness on softwood, hardwood, and grasses), fractionation of lignocellulose components (lignin removal), bioconversion efficacy, and a sustainability impact assessment. After a thorough and systematic optimization, the following conditions emerged for optimal process economics (i.e., shortest time, lowest temperature, and highest solid loading): pretreatment of sorghum biomass via ethanolamine (25% solvent in water) with temperature 100°C, time 1 h and solid loading 40%. These conditions generated yields of 90% glucose, 76% xylose, 59% lignin removal, and 73% solid recovery. The pretreated biomass and recovered lignin were studied using PXRD/TGA/FTIR/NMR analyses, revealing that the morphol. and crystallinity of biomass does not change after pretreatment, and recovered lignin is dominated by guaiacyl groups, which are suitable for lignin valorization. Subsequently the process was consolidated and scaled up (40X) to generate >99% sugar yields followed by a test of bioconversion using the omnivorous host R. toruloides, which converted >97% C5, C6 and phenolic into the biofuel precursor bisabolene at a titer of 1155 mg L-1. The TEA revealed that the cost of biomass deconstruction was severely reduced (up to 50%) compared to similar pretreatment methods, including ethanolamine acetate and cholinium lysinate, evaluated under the same modeling assumptions. This study has demonstrated the effectiveness and robustness of alkanolamines towards biomass processing and presents a new solvent group to be considered for biomass pretreatment within a com. biorefinery for the deconstruction of lignocellulosic biomass.2-Aminopropane-1,3-diol(cas: 534-03-2SDS of cas: 534-03-2) was used in this study.

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.SDS of cas: 534-03-2

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Li, Kaiqi; Chen, Long; Xiong, Zuochun; Xiong, Chengdong; Chen, Dongliang published an article in 2022. The article was titled 《New aliphatic poly(ester-carbonate)s bearing amino groups based on t-Butyloxy carbonyl as Protecting Group》, and you may find the article in Journal of Polymer Research.Name: 2-Aminopropane-1,3-diol The information in the text is summarized as follows:

Amino-functionalized six-membered cyclic carbonate tert-butyl(2-oxo-1,3-dioxan-5′-yl) carbamate (TBC) was synthesized with tert-Butyloxycarbonyl (Boc) as protected group. Due to its thermal properties, ring-opening polymerization (ROP) carried out in a relatively low temperature, and Sn (Oct)2 as catalyst. A series of copolymers were prepared with L-lactide (LA), ε-Caprolactone (CL) as co-monomers, searching for proper components and ratios. The protecting Boc-group was easy to remove by using trifluoroacetic acid (TFA). The structures of TBC and copolymers were confirmed by 1H NMR and 13C NMR anal. Copolymers were characterized by DSC, GPC and water contact angle anal. The introduction of pendant amino groups resulted in a significant enhancement of hydrophilicity of the copolymers. The experimental part of the paper was very detailed, including the reaction process of 2-Aminopropane-1,3-diol(cas: 534-03-2Name: 2-Aminopropane-1,3-diol)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Name: 2-Aminopropane-1,3-diol

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《Synthesis and characterization of light-degradable bromocoumarin functionalized polycarbonates》 was written by Mueller, Ann-Kathrin; Jung, Dimitri; Sun, Jingjiang; Kuckling, Dirk. Name: 2-Aminopropane-1,3-diol And the article was included in Polymer Chemistry in 2020. The article conveys some information:

Biocompatible polymeric materials that can degrade in response to external irradiation with high spatial and temporal control show enormous potential in the field of biomedical applications. Herein, two six-membered cyclic carbonate monomers with a light-cleavable bromocoumarin functional pendent moiety attached via a carbamate linkage were prepared from 2-amino-1,3-propanediol (serinol) and 2-(aminomethyl)-2-methylpropane-1,3-diol, resp. A series of light-degradable polycarbonates were synthesized by organo-catalyzed ring opening polymerization (ROP) of both monomers, and meanwhile their polymerization kinetics were investigated. Upon light-induced deprotection, both types of polycarbonates degraded rapidly into low mol.-weight compounds The results of size exclusion chromatog. (SEC), NMR (NMR) spectroscopy and UV/visible (UV/VIS) spectroscopy confirmed the polymer structures and the light-induced degradation behavior. The photo-cleavage rates of bromocoumarin pendent groups and the degradation rates of the polymers were strongly dependent on polymer structures and used solvents. In the experimental materials used by the author, we found 2-Aminopropane-1,3-diol(cas: 534-03-2Name: 2-Aminopropane-1,3-diol)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Nitrous acid converts secondary amines (aliphatic or aromatic) to N-nitroso compounds (nitrosamines): R2NH + HNO2 → R2N―NO. Some nitrosamines are potent cancer-inducing substances, and their possible formation is a serious consideration when nitrites, which are salts of nitrous acid, are present in foods or pharmaceutical preparations. Tertiary amines give rise to nitrosamines more slowly; an alkyl group is eliminated as an aldehyde or ketone, along with nitrous oxide, N2O.Name: 2-Aminopropane-1,3-diol

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《Selective Covalent Modification of Layered Double Hydroxide Nanoparticles with Tripodal Ligands on Outer and Interlayer Surfaces》 was written by Muramatsu, Keisuke; Hayashi, Shiori; Kuroda, Yoshiyuki; Oka, Yuya; Wada, Hiroaki; Shimojima, Atsushi; Kuroda, Kazuyuki. Computed Properties of C3H9NO2 And the article was included in Inorganic Chemistry in 2020. The article conveys some information:

Layered double hydroxides (LDHs) have occupied an important place in the fields of catalysts, electrocatalysts, and fillers, and their applicability can be greatly enhanced by interlayer organic modifications. In contrast to general organic modification based on noncovalent modification using ionic organic species, this study has clarified in situ interlayer covalent modification of LDH nanoparticles (LDHNPs) with the tripodal ligand tris(hydroxymethyl)aminomethane (Tris-NH2). Interlayer-modified CoAl LDHNPs were obtained by a one-pot hydrothermal treatment of an aqueous solution containing metal salts and Tris-NH2 at 180°C for 24 h. Tris-NH2 was covalently bonded on the interlayer surface of LDHNPs. Interlayer-modified NiAl LDHNPs were also similarly synthesized. Some comparative experiments under different conditions indicate that the important parameters for interlayer modification are the number of bonding sites per a modifier, the electronegativity of a constituent divalent metal element, and the concentration of a modifier; this is because these parameters affect the hydrolytic stability of alkoxy-metal bonds between a modifier and a layer of LDHNPs. The synthesis of interlayer-modified MgAl LDHNPs was achieved by adjusting these parameters. This achievement will enable new potential applications because modification of only the outer surface has been achieved until now. Interlayer-modified LDHNPs possessing CO32- in the interlayer space were delaminated into monolayers under ultrasonication in water. The proposed method provides a rational approach for interlayer modification and facile delamination of LDHNPs. Layered double hydroxide nanoparticles (LDHNPs), whose interlayer surfaces were organically modified with tripodal ligands, were prepared, and they showed improved delamination behavior in water under ambient conditions. Factors affecting the interlayer modification of LDHNPs were discussed on the basis of the stability of alkoxy bonds between the LDH layers and the ligands. In addition to this study using 2-Aminopropane-1,3-diol, there are many other studies that have used 2-Aminopropane-1,3-diol(cas: 534-03-2Computed Properties of C3H9NO2) was used in this study.

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Examples of direct uses of amines and their salts are as corrosion inhibitors in boilers and in lubricating oils (morpholine), as antioxidants for rubber and roofing asphalt (diarylamines), as stabilizers for cellulose nitrate explosives (diphenylamine), as protectants against damage from gamma radiation (diarylamines), as developers in photography (aromatic diamines), as flotation agents in mining, as anticling and waterproofing agents for textiles, as fabric softeners, in paper coating, and for solubilizing herbicides.Computed Properties of C3H9NO2

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《Synthesis of an oligomeric thickener for supercritical carbon dioxide and its properties》 was written by Zhou, Ming; Tu, Hongjun; He, Yinglan; Peng, Pengao; Liao, Mao; Zhang, Jinfeng; Xu, Xiaoxia; He, Wanying; Zhao, Yaxiong; Guo, Xiao. COA of Formula: C3H9NO2 And the article was included in Journal of Molecular Liquids in 2020. The article conveys some information:

The applications of supercritical CO2 as a solvent are limited by its very low viscosity. A four-armed oligomeric CO2 thickener containing fluorine 1,6-bis(1,3-perfluorooctanoic acid biester-2-Urea)Hexane (BPFAUH) was synthesized with 2-amino-1,3-propanediol, (Boc)2D, pentadecafluorooctanoic acid, thionyl chloride, hexamethylene-1,6-diisocyanate (HMDI) as crude materials by using amino protection, esterification, deprotection, and nucleophilic addition reaction. and characterized using FTIR, 13C NMR and elemental anal. TG anal. showed that the oligomeric thickener was thermally stable below 473.15 K. Its solubility in CO2 correlated well with the pressure. The viscosity of the system increased with increasing thickener concentration, but the viscosity of the thickener decreased with increasing temperature and shear rate. The system viscosity reached 19.2 mPa·s, a 480-fold increase compared to the initial viscosity, when 2.0 wt% thickener was added; this increase greatly exceeds that of other reported thickeners. The CO2-philic fluorocarbon groups promoted the solubility of the thickener; while intra-mol. thickener crosslinking occurred via O···H bonds. Thus, the mol. with four fluorocarbon groups and two urea groups formed a network structure to achieve superstrong CO2-thickening ability. In the experiment, the researchers used 2-Aminopropane-1,3-diol(cas: 534-03-2COA of Formula: C3H9NO2)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.COA of Formula: C3H9NO2

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Category: alcohols-buliding-blocksIn 2022 ,《Crosslinked Protein Delivery Strategy with Precise Activity Regulation Properties for Cancer Therapy and Gene Editing》 appeared in Advanced Healthcare Materials. The author of the article were Liu, Ning; Zhu, Lianghan; Sun, Honghao; Zhou, Zhanwei; Dong, Jingwen; Sun, Minjie. The article conveys some information:

Protein drugs hold tremendous promise for therapeutic applications due to their direct and superior pharmacol. effects. However, protein drugs can be degraded in blood stream and unable to cross many phys. barriers to exert therapeutic effect. Degradable synthetic crosslinking is a versatile strategy to enhance the stability of the nanoparticle in a complex physiol. medium and is helpful to get through phys. barriers. Herein, crosslinked polypeptide (PABP) composed of poly-amino acids including cystine, tyrosine, lysine, ketal bridge, and polyethylene glycol (PEG) is modularly explored and synthesized for protein delivery. Notably, plasma membrane V-ATPase is the particular pathway which induces the macropinocytosis of the inner peptide analogous core (PAB/protein) after the outer PEG shell disassocn. at tumor intercellular sites. In addition, PABP/protein achieves proteins′ activity shielding in systemic circulation and recovery in tumor cytoplasm precisely. In application, PABP/RNase-A shows satisfying tumor accumulation and antineoplastic efficacy. More importantly, PABP/Cas9 + small guide RNA displays obvious gene editing efficiency. The crosslinked protein delivery strategy not only makes the accurate protein transport and activity regulation possible but also is promising in paving the way for clin. translation of protein drugs. In the experimental materials used by the author, we found 2-Aminopropane-1,3-diol(cas: 534-03-2Category: alcohols-buliding-blocks)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Halogenation, in which one or more hydrogen atoms of an amine is replaced by a halogen atom, occurs with chlorine, bromine, and iodine, as well as with some other reagents, notably hypochlorous acid (HClO). With primary amines the reaction proceeds in two stages, producing N-chloro- and N,N-dichloro-amines, RNHCl and RNCl2, respectively. With tertiary amines, an alkyl group may be displaced by a halogen.Category: alcohols-buliding-blocks

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《Synthesis, characterization, and antimicrobial evaluation of random poly(ester-carbonate)s bearing pendant primary amine in the main chain》 was written by Dong, Peng; Feng, Jing; Li, Sujuan; Sun, Tingli; Shi, Qingshan; Xie, Xiaobao. HPLC of Formula: 534-03-2 And the article was included in Polymers (Basel, Switzerland) in 2020. The article conveys some information:

Starting from primary amine bearing cyclic carbonate tert-butyl-(2-oxo-1,3-dioxan-5-yl) carbamate (TBODC) and caprolactone (CL), amphiphilic poly(caprolactone-ran-amino tri-Me carbonate)s (P(CL-ran-ATC)s) random copolymers with controlled mol. weight and composition were synthesized via ring opening polymerization (ROP) and deprotection, using stannous octoate (Sn(Oct)2) as catalyst and benzyl alc. (BnOH) as initiator. Therefore, hydrophilic/lipophilic ratio (HLR) of the P(CL-ran-ATC)s copolymers can be finely adjusted by the feed ratio of TBODC and CL. The antimicrobial activity against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) of P(CL-ran-ATC)s were proportional to HLR, and P(CL-ran-ATC)s presented more vigorous bactericidal activity towards S. aureus. The min. inhibitory concentration (MIC) values of P(CL-ran-ATC 50.9%) are 2000μg mL-1 and 3000μg mL-1 for S. aureus and E. coli. While P(CL-ran-ATC 50.9%) exhibited deficient hemolytic activity as 1.41%. In addition, the P(CL-ran-ATC)s showed extremely low cytotoxicity towards fibroblast L929 cells. After reading the article, we found that the author used 2-Aminopropane-1,3-diol(cas: 534-03-2HPLC of Formula: 534-03-2)

2-Aminopropane-1,3-diol(cas: 534-03-2) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.HPLC of Formula: 534-03-2

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