Tag: M.W=200-250

Sharma, Amit Kumar published the artcileProduction of a sustainable fuel from microalgae Chlorella minutissima grown in a 1500 L open raceway ponds, Application In Synthesis of 121-79-9, the publication is Biomass and Bioenergy (2021), 106073, database is CAplus.

Energy demand is increasing continuously due to the progress of industrialization, the vehicular population of the world, and modernization in lifestyle. In the present study, Chlorella minutissima microalgae were cultured in a 1500 L raceway open pond using com. fertilizer under semi-continuous mode. About 19.98 wt % lipid was extracted by the soxhlet extraction method from this microalgae biomass. To optimize the input reaction parameters (temperature, lipid to methanol ratio, microwave power, and reaction time) for improving transesterification yield, Response Surface Methodol. (RSM) was employed. The output responses of the experiments were biodiesel yield along with d., kinematic viscosity, calorific value, cold flow properties, and oxidation stability. To validate the model, confirmation trials were carried out. All the fuel properties were found to be satisfying ASTM D6751 and EN 14214 standard specifications except for oxidation stability at 3.0 h. The oxidation stability was further improved by using appropriate antioxidants and improved up to 10.5 h with the addition of 1000 ppm Pr gallate.

Biomass and Bioenergy published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H11N3O3S, Application In Synthesis of 121-79-9.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Li, Zengji published the artcileStudy on living radical polymerization by using BDC as the photoiniferter, HPLC of Formula: 3052-61-7, the publication is Gaodeng Xuexiao Huaxue Xuebao (1989), 10(1), 83-6, database is CAplus.

Photopolymerization of styrene using benzyl N,N-diethyldithioaminoformate (BDC) as iniferter was studied. Both the yield and average mol. weight of the polymer increased with increasing polymerization time. Polymers with functional end groups were obtained. During the polymerization, the stable small radical which was produced by photolysis of BDC or functional end groups and the propagating radical of styrene were determined by ESR. The living radical polymerization mechanism was explained.

Gaodeng Xuexiao Huaxue Xuebao published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, HPLC of Formula: 3052-61-7.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Yang, Wen-Jun published the artcileEffects of reaction medium on BDC-initiated acrylamide polymerization, Safety of Benzyl diethylcarbamodithioate, the publication is Gaodeng Xuexiao Huaxue Xuebao (1994), 15(11), 1733-5, database is CAplus.

The effects of reaction medium (alc., dioxane, dioxane/alc.) on the heterogeneous polymerization of acrylamide initiated by BDC (benzyl diethyldithiocarbamate) were studied. Heterogeneous polymerization differed from homogeneous solution polymerization initiated by BDC and did not have the character of living radical polymerization The polarity of reaction medium affected the enolization of acrylamide. The polymer yield and polymer mol. weight had different values using different solvents. The UV spectra showed that iniferter functional groups remained in products.

Gaodeng Xuexiao Huaxue Xuebao published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C3H8N2S, Safety of Benzyl diethylcarbamodithioate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Lu, Ting published the artcileImproving the oxidative stability of flaxseed oil with composite antioxidants comprising gallic acid alkyl ester with appropriate chain length, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate, the publication is LWT–Food Science and Technology (2021), 110763, database is CAplus.

A gallic acid (GA) alkyl ester exerting the best antioxidant effect in flaxseed oil was identified from ten GA alkyl esters with various chain lengths, which was used in combination with other antioxidants including antioxidant of bamboo leaves, ascorbyl palmitate, butylated hydroxytoluene, phytic acid, phospholipid, rosemary extract, tocopherol, tea polyphenols, and tea polyphenol palmitate (TPP) to improve oxidative stability of flaxseed oil. Rancimat induction period, peroxide value, thiobarbituric acid-reactive substances, and ESR assays indicate that myristyl gallate (GA-C14) was the best GA ester. The flaxseed oil containing GA-C14 and TPP demonstrated the best oxidative stability among all the composite antioxidants. Through optimizing the mixture ratio, the flaxseed oil containing 34.4 mg/kg GA-C14 and 480 mg/kg TPP showed the best oxidative stability. Its shelf life was predicted by an accelerated shelf life testing using the Arrhenius model, which was prolonged 4.83-fold compared to the control sample under 25 °C.

LWT–Food Science and Technology published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Bergkamp, Jesse J. published the artcileSynthesis and characterization of silicon phthalocyanines bearing axial phenoxyl groups for attachment to semiconducting metal oxides, Safety of Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, the publication is Journal of Porphyrins and Phthalocyanines (2011), 15(9-10), 943-950, database is CAplus.

A series of axial phenoxy substituted octabutoxy silicon phthalocyanines bearing Et carboxylic ester and di-Et phosphonate groups have been prepared from the corresponding phenols in pyridine. Axial bis-hydroxy silicon phthalocyanine was prepared using an adaptation of a reported protocol from the octabutoxy free-base phthalocyanine. The phenols bear either carboxylic ester or phosphonate groups, which upon deprotection can serve as anchoring groups for attaching the phthalocyanines to semiconducting metal oxides used in dye sensitized solar cells (DSSCs). All the phthalocyanines of the series absorb in the near infra-red region: 758-776 nm. The first oxidation potential for each phenoxy derivative occurs near 0.55 V vs. SCE as measured by cyclic voltammetry, with all falling within a 10 mV range. This indicates that these dyes will have sufficient energy in the photo-excited state to drive the reduction of protons to hydrogen. Taking into account the absorption and electrochem. potentials, these dyes are promising candidates for use in dual-threshold photo-electrochem. cells.

Journal of Porphyrins and Phthalocyanines published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Safety of Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Yukun published the artcileThe High Complexity of Plastic Additives in Hand Wipes, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate, the publication is Environmental Science & Technology Letters (2021), 8(8), 639-644, database is CAplus.

Extensive and long-term applications have resulted in global distributions of plastic additives (PAs). To facilitate the understanding of human exposure to PAs, the present study investigated the abundances and profiles of a broad range of PAs on human hands via hand wipe sampling. Sixty out of 160 PAs were detected in >50% of hand wipes collected from 30 children and 45 adults, among which a number of organophosphate esters (OPEs) and synthetic antioxidants that have rarely or never been investigated in prior studies. The total masses of PAs ranged from 650 to 87 030 ng (median: 6110 ng) and 1230 to 19360 ng (median: 5600 ng) in adultsâ€?and children′s hand wipes, resp. By categories, phthalates (PAEs) represented the most abundant group of PAs, followed by non-PAE plasticizers, UV stabilizers, OPEs, antioxidants, and bisphenol analogs. Children exhibited greater PA levels per square centimeter of hand surface, indicating elevated exposure compared with adults. Strong correlations existed for many PAs between adults and children or within each subpopulation, indicating close connections between the two subpopulations in the exposure profiles. The great complexity of plastic additives on hands raises the need for future investigations on human exposure pathways and potential health risks from the “cocktail” effects.

Environmental Science & Technology Letters published new progress about 121-79-9. 121-79-9 belongs to esters-buliding-blocks, auxiliary class Natural product, name is Propyl 3,4,5-trihydroxybenzoate, and the molecular formula is C10H12O5, Recommanded Product: Propyl 3,4,5-trihydroxybenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Rabizadeh, E published the artcileEsterase inhibitors diminish the modulation of gene expression by butyric acid derivative, pivaloyloxymethyl butyrate (AN-9)., Safety of (Pivaloyloxy)methyl butyrate, the publication is Israel journal of medical sciences (1996), 32(12), 1186-91, database is MEDLINE.

Pivaloyloxymethyl butyrate (AN-9) belongs to the family of acyloxyalkyl ester prodrugs of carboxylic acids which undergo intracellular hydrolysis to yield butyric acid (BA). We have previously shown that AN-9 and BA reduce the level of c-myc and enhance c-jun transcripts in HL-60 cells, and that the differentiation of these cells, induced by AN-9, is dependent on the presence of intracellular esterases. In this study we show that esterase inhibitors abolish the changes induced by AN-9 on c-myc and c-jun expression. In contrast, esterase inhibitors do not change the effects of BA on c-myc or c-jun. Interestingly, these inhibitors affect the modulation induced by both AN-9 and BA on the retinoblastoma tumor suppressor gene. These data suggest that AN-9 is indeed a prodrug of BA and that prior intracellular hydrolysis by esterases is material for AN-9 activity.

Israel journal of medical sciences published new progress about 122110-53-6. 122110-53-6 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester,Inhibitor, name is (Pivaloyloxy)methyl butyrate, and the molecular formula is C10H18O4, Safety of (Pivaloyloxy)methyl butyrate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Rabizadeh, Ester published the artcileRapid alteration of c-myc and c-jun expression in leukemic cells induced to differentiate by a butyric acid prodrug, Product Details of C10H18O4, the publication is FEBS Letters (1993), 328(3), 225-9, database is CAplus and MEDLINE.

The novel prodrug of butyric acid (BA), pivaloyloxymethyl butyrate, has been shown, in vitro, to induce differentiation and inhibit leukemic cell proliferation. The prodrug affects the cells in vitro at lower concentration and at least 100 times faster than does BA. The authors have compared the ability of BA with that of its prodrug AN-9 to modulate the expression of the early regulating genes, c-myc and c-jun, in HL-60 cells. Exposure of HL-60 cells to the prodrug resulted in a decrease of c-myc and an increase of c-jun expression. The prodrug elicited this effect at lower concentrations and at least 100 times faster than BA. Since changes in the expression of c-myc and c-jun occur minutes after exposure of the cells to the prodrug, these genes are likely to play a major role in the early stages of the differentiation pathway.

FEBS Letters published new progress about 122110-53-6. 122110-53-6 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester,Inhibitor, name is (Pivaloyloxy)methyl butyrate, and the molecular formula is C10H18O4, Product Details of C10H18O4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Batova, Ayse published the artcileThe histone deacetylase inhibitor AN-9 has selective toxicity to acute leukemia and drug-resistant primary leukemia and cancer cell lines, Formula: C10H18O4, the publication is Blood (2002), 100(9), 3319-3324, database is CAplus and MEDLINE.

The novel prodrug of butyric acid, pivaloyloxymethyl butyrate (AN-9), a histone deacetylase inhibitor, shows great promise as an effective and relatively nontoxic anticancer agent for solid malignancies. However, little is known about its effects on hematopoietic malignancies. In this study, the authors show that 21 primary samples of acute leukemia were sensitive to the antiproliferative effects of AN-9, with a 50% inhibitory concentration (IC₅₀) of 45.8 μM. In colony-forming assays, primary T-cell acute lymphoblastic leukemia (T-ALL) cells were 3-fold more sensitive to AN-9 than the normal hematopoietic progenitors, erythroid burst-forming units, and granulocyte/monocyte colony-forming units. AN-9 induced apoptosis in the T-ALL cell line CEM. A common problem with cancer is chemoresistance, which is often typical of relapsed cancers. Remarkably, a T-ALL sample at diagnosis and an acute myeloid leukemia sample at relapse that were resistant to doxorubicin in vitro were sensitive to AN-9, with an IC₅₀ of 50 μM for both samples. More strikingly, samples from 2 infants with t(4;11) ALL obtained at diagnosis and relapse each were the most sensitive to AN-9, with IC₅₀ values of 25 and 17 μM, resp. Furthermore, a doxorubicin-resistant clone of HL60, HL60/ADR, obtained by the transfection of the MDR-1 gene, was equally sensitive to AN-9 cytotoxicity as the parental cells. AN-9 induced the expression of p21 in an infant leukemia sample with 11q23 rearrangement, but not in T- or B-precursor ALL. Collectively, the authors’ results suggest that AN-9 is a selective agent for hematopoietic malignancies that can circumvent the mechanisms of chemoresistance limiting most conventional chemotherapy.

Blood published new progress about 122110-53-6. 122110-53-6 belongs to esters-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Ester,Inhibitor, name is (Pivaloyloxy)methyl butyrate, and the molecular formula is C10H18O4, Formula: C10H18O4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kyeremateng, S. O. published the artcileTriphilic block copolymers: synthesis, aggregation behavior and interactions with phospholipid membranes, Name: Benzyl diethylcarbamodithioate, the publication is ACS Symposium Series (2010), 65-84, database is CAplus.

Novel PPO-based amphiphilic diblock copolymer and triphilic multiblock copolymer analogs of the architectures BA, CBA, and CABAC have been successfully synthesized by combination of atom transfer radical polymerization (ATRP) and copper(l)-catalyzed alkyne-azide cycloaddition (CuAAC) ‘click’ post-polymerization reaction. The A, B, and C components of the block copolymers are formed by hydrophilic poly(glycerol monomethacrylate) (PGMA), lipophilic poly(propylene oxide) (PPO), and perfluoroalkyl segment, resp. Their critical micelle concentrations in water are determined from surface tension measurements. Their aggregation behavior in aqueous medium is studied by temperature-dependent ¹H- and ¹⁹F NMR spectroscopy. The presence of the perfluoro segments within the micelle cores of the triphilic block copolymers enhanced 3-4 folds their solubilization capacity of tetrafluorobenzene compared to micelle cores without the perfluoro segments. It is found that the triphilic copolymer inserts into lipid membranes and induces lateral demixing between the two homolog lipids at of the phase transition of the lipids.

ACS Symposium Series published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, Name: Benzyl diethylcarbamodithioate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics