Tag: M.W=200-250

Ioriatti, C. published the artcileStudy of the principal factors influencing the emission of synthetic sex attractants from rubber and plastic diffusers, Recommanded Product: (Z)-Dodec-9-en-1-yl acetate, the publication is Entomologia Experimentalis et Applicata (1987), 44(2), 123-30, database is CAplus.

To determine the effect of various factors influencing the emission rate of pheromones from slow release dispensers, laboratory tests were undertaken with two types of rubber (Michelin) and one type of plastic trilaminate (Hercon) dispenser. The effects of chain length, and the presence of double bonds were tested with three pheromonal compounds, (Z)-9-dodecenyl acetate, (Z)-9-tetradecenyl acetate, and dodecenyl acetate impregnated on both types of rubber dispenser. The influences of temperature, wind velocity, humidity and percent loading were also tested. Data obtained indicated that chain length has a greater effect than the presence of a double bond. Among the climatic factors tested, wind speed has a greater effect than temperature while humidity has a minimal effect.

Entomologia Experimentalis et Applicata published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Recommanded Product: (Z)-Dodec-9-en-1-yl acetate.

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

Linn, C. E. Jr. published the artcileMale moth sensitivity to multicomponent pheromones: critical role of female-released blend in determining the functional role of components and active space of the pheromone, Recommanded Product: (Z)-Dodec-9-en-1-yl acetate, the publication is Journal of Chemical Ecology (1986), 12(3), 659-68, database is CAplus and MEDLINE.

Male redbanded leafroller (Argyrotaenia velutinana), cabbage looper (Trichoplusia ni), and Oriental fruit moths, (Grapholita molesta) were tested in a flight tunnel for responses to (1) the major pheromone component, (2) the Z/E pheromone component mixtures for Oriental fruit moth and redbanded leafroller, and (3) and the female-released blends, over a series of dosages. Experiments were designed to test the hypothesis that male response downwind of a female is initiated by the major component and that minor components function only to elicit behaviors close to the female during close-range approach and courtship. The results did not support this hypothesis, but rather showed that males initiated upwind flight in significantly higher percentages to the complete blends of components, at all dosages, compared to single components or partial blends. Addition of minor components also significantly enhanced male perception of the major component at lower dosages, resulting in completed flights to dosages of the major component that alone did not elicit any upwind flight. Thus, minor components apparently function to enhance male sensitivity to the pheromone, and the specificity of the signal. Also, the active space of the pheromone is apparently a function of the upper and lower concentration thresholds for the blend of components, and not simply for the major component.

Journal of Chemical Ecology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Recommanded Product: (Z)-Dodec-9-en-1-yl acetate.

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

de Jesus, Jany H. F. published the artcileTHERMOANALYTICAL STUDIES ON NEW POLYMORPHIC FORMS OF PROPYL, OCTYL AND DODECYL GALLATES, HPLC of Formula: 121-79-9, the publication is Thermochimica Acta (2022), 179114, database is CAplus.

The thermal behavior of Pr (PG), octyl (OG) and dodecyl (DG) gallates, three antioxidants widely used in fuel and food industries, was evaluated by thermoanal. techniques (TG, DTA, DSC and hot stage microscopy), and complementary techniques, such as FTIR-ATR and XRD. All of them presented melting in characteristic temperatures during heating. The resulting liquid phases crystallized in different solid forms when cooled just after melting. However, when the samples were heated beyond melting temperature, they decomposed Although thermal studies were conducted at higher temperature than those in which they are regularly used, this work provided relevant information regarding their thermal behavior at higher temperatures Data from XRD, FTIR-ATR and hot stage microscopy were used to confirm the presence of new polymorphs. Finally, based on these results mechanisms describing the thermal behavior of PG, OG and DG were proposed.

Thermochimica Acta 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, HPLC of Formula: 121-79-9.

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

Gercek, Yusuf Can published the artcileScreening of Plant Pollen Sources, Polyphenolic Compounds, Fatty Acids and Antioxidant/Antimicrobial Activity from Bee Pollen, SDS of cas: 121-79-9, the publication is Molecules (2022), 27(1), 117, database is CAplus and MEDLINE.

In this study, the botanical origin, total flavonoid and phenolic content, antioxidant activity, phenolic profile and fatty acid composition of mixed bee pollen loads collected in Bayburt, Turkey, were determined In addition to these assays, antibacterial activity of bee-collected pollen extract (BCPE) against a variety of food-borne pathogenic bacteria was determined in vitro. Pollen loads were classified into five botanical families based on their color: Asteraceae, Fabaceae, Campanulaceae, Cistaceae and Rosaceae. Total flavonoid, total phenolic, CUPRAC and CERAC concentrations were 173.52 mg GAE/g, 79.21 mg QE/g, 85.59 mg Trolox/g and 118.13 mg Trolox/g, resp. Twenty-three phenolic compounds were scanned in bee pollen extract by LC-MS/MS, with rutin being the most abundant. Cis-4,7,10,13,16,19 docosahexaenoic acid was the predominant fatty acid, followed by cis-11-eicosenoic acid, palmitic acid, and alfa linolenic acid. In addition, the agar well diffusion (AWD) and micro-broth dilution methods were used to determine of the antibacterial activity of the BCPE sample. MIC values were observed to vary between 2.5-5 mg/mL for Gram-pos. bacteria and 5-10 mg/mL for Gram-neg. bacteria. These findings indicate that bee pollen could be a potential source of antioxidants and antimicrobials.

Molecules 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, SDS of cas: 121-79-9.

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

McDonough, L. M. published the artcileInsect sex pheromones. Effect of temperature on evaporation rates of acetates from rubber septa, Application of (Z)-Dodec-9-en-1-yl acetate, the publication is Journal of Chemical Ecology (1989), 15(3), 779-90, database is CAplus and MEDLINE.

The half-lives (t_1/2) for evaporative loss of n-alkyl and n-alkenyl acetates from rubber septa were determined at 15-35°. The changes in t_1/2 with temperature gave a high correlation with the equation ln t_1/2 = ΔH/RT + y₀, where ΔH is the heat of vaporization, R is the gas constant, T is the absolute temperature, and y₀ is a constant Half-lives changed dramatically with temperature and the degree of change with temperature increased with increasing mol. weight For mixtures, component ratios changed with temperature, but the degree was modest. At 20° there was a 7.5-fold ratio of t_1/2 between members of the homologous n-alkyl or n-alkenyl acetates differing by two carbon atoms. The large change in t_1/2 with temperature and with number of carbon atoms is a consequence of the thermodn. relationships and the temperature range of pheromone usage. Therefore, a similar degree of changes in t_1/2 with temperature and number of carbon atoms will apply to other formulations of the same type (those in which the rate of evaporation is first order). The values of t_1/2 at 20° mainly agreed very well with those reported previously at room temperature However, previously reported values for pentadecyl and hexadecyl acetate were revised. Half-lives depend on the vapor pressure of a compound in the formulation substrate, but not on the vapor pressure of the pure compound

Journal of Chemical Ecology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Application of (Z)-Dodec-9-en-1-yl acetate.

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

Mozuraitis, R. published the artcileNew sex attractants and inhibitors for 17 moth species from the families Gracillariidae, Tortricidae, Yponomeutidae, Oecophoridae, Pyralidae and Gelechiidae, HPLC of Formula: 16974-11-1, the publication is Journal of Applied Entomology (1998), 122(8), 441-452, database is CAplus.

Field screening tests of 21 saturated and monounsaturated straight chain C₁₂ and C₁₄ alcs. and their acetates as well as some binary mixtures in dosages of 1 and 0.2 mg/dispenser were carried out in Lithuanian in 1993 and 1994. New sex attractants were determined for males of five moth species of the family Gracillariidae (E10-12:OH for Phyllonorycter sorbi, E10-12Ac for Ph. cydoniella and Ph. oxyacanthae, Z10-12:OAc for Ph. junoniella, and a mixture of Z10-14:OAc with E9-14:OAc in a 1:10 for Ph. sylvella), for four species of the family Tortricidae (E10-14:OAc for Endothenia ericetana, Z10-14:OAc in a 10:1 mixture with E11-14:OAc for Eudemis porphyrana, E11-14:OAc in a 10:1 mixture with E11-14:OH for Dichrorampha petiverella and Cochylis dubitana), for two species of Gelechiidae (Z9-14:OAc in a mixture with either Z10-14:OAc in a ratio 1:1, E9-14:OAc in a ratio 1:10 or E10-14:OAc in a ratio 10:1 for Bryotropha galbanella, Z10-14:OAc and E9-14:OAc in a ratio 10:1 for B. mundella), as well as for one species of each of the families Yponomeutidae (Z7-14:OAc for Paraswammerdamia lutarea) and Oecophoridae (Z10-14:OAc and E9-14:OAc in a ratio 10:1 for Pseudatemelia josephinae). Preliminary composition of sex attractants was established for three moth species of the family Gracillariidae (Z10-14:OAc in a 1:10 mixture with E9-14:OAc for Phyllonorycter heegerella, Ph. coryli and Ph. dubitella) and for one species of the family Gelechiidae (Z9-14:OAc for Bryotropha terella). Inhibitors of the sex attractants were found for four leafminer species of the family Gracillariidae (Z7-, Z9- and Z10-12:OAc for Phyllonorycter sorbi, Z10-, E10-12:OH and E10-14:OH for Ph. mespilella, E10-12:OH for Ph. cydoniella, Z10-12:OH and E10-14:OH for Ph. oxyacanthae), for three species of Tortricidae (E9-, Z11- and E11-14:OAc for Endothenia ericetana, E11-14:OAc for Gypsonoma minutana, E10- and E11-14:OAc for Epagoge grotiana), and for one species from the family Pyralidae (Z10-, E10- and E11-14:OAc for Pyrausta aurata). Data from male behavior tests in tube olfactometers are presented for Phyllonorycter blancardella, Ph. sorbi, Ph. dubitella and Ph. strigulatella and active compounds revealed.

Journal of Applied Entomology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, HPLC of Formula: 16974-11-1.

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

Edwards, Jonathan D published the artcileEffect of the Butyrate Prodrug Pivaloyloxymethyl Butyrate (AN9) on a Mouse Model for Spinal Muscular Atrophy., Application of (Pivaloyloxy)methyl butyrate, the publication is Journal of neuromuscular diseases (2016), 3(4), 511-515, database is MEDLINE.

Spinal muscular atrophy (SMA) is an early-onset motor neuron disease that leads to loss of muscle function. Butyrate (BA)-based compounds markedly improve the survival and motor phenotype of SMA mice. In this study, we examine the protective effects of the BA prodrug pivaloyloxymethyl butyrate (AN9) on the survival of SMNΔ7 SMA mice. Oral administration of AN9 beginning at PND04 almost doubled the average lifespan of SMNΔ7 SMA mice. AN9 treatment also increased the growth rate of SMNΔ7 SMA mice when compared to vehicle-treated SMNΔ7 SMA mice. In conclusion, BA prodrugs like AN9 have ameliorative effects on SMNΔ7 SMA mice.

Journal of neuromuscular diseases 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, Application of (Pivaloyloxy)methyl butyrate.

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

Silk, P. J. published the artcileIdentification of sex pheromone component of spruce budmoth Zeiraphera canadensis, Related Products of esters-buliding-blocks, the publication is Journal of Chemical Ecology (1989), 15(10), 2435-44, database is CAplus and MEDLINE.

The analyses of virgin female sex pheromone gland extracts by gas chromatog. (GC), GC-electroantennog. detection and GC-mass spectrometry followed by field-trapping experiments, have identified (E)-9-tetradecenyl acetate (E9-14:Ac) as the primary sex pheromone component of the spruce budmoth, Z. canadensis. Dosages of 1.0-100.0 μg of E9-14:Ac impregnated in rubber septa provide effective trap baits.

Journal of Chemical Ecology published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C10H12F6N4O6PdS2, Related Products of esters-buliding-blocks.

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

Struble, D. L. published the artcileSex pheromone components of an Alberta population of European corn borer, Ostrinia nubilalis (HBN.) (Lepidoptera: Pyralidae), Formula: C14H26O2, the publication is Canadian Entomologist (1987), 119(3), 291-9, database is CAplus.

The sex pheromone components of European corn borer, O. nubilalis, from southern Alberta were identified in washes and extracts of abdomen tips from calling female moths. This is a Z strain population as (Z)-11- [20711-10-8] and (E)-11-tetradecenyl acetate  [33189-72-9] were isolated in a ratio 100:1.4, and a corresponding synthetic blend in a ratio of 100:3 attracted males in the field. Dodecyl alc.  [112-53-8], tetradecyl alc.  [112-72-1] and acetate [638-59-5], and (Z)-11-tetradecenol  [34010-15-6] were also identified, but none of these components nor other pheromone-like mono-unsaturated C₁₀ to C₁₆ acetates had any effect on increasing the trap catches of male moths under field conditions. However, the addition of (Z)-9-dodecenyl acetate  [16974-11-1] or (Z)-9-tetradecenyl acetate  [16725-53-4] to the synthetic pheromone blend significantly reduced the capture of male moths, even though these compounds were not detectable in the female extracts Pheromone blends used for monitoring the Z strain of the European corn borer must be essentially free, ca<0.1%, of these acetates. A com. available, sticky-surface, delta-type trap was the most satisfactory of several tested for capturing moths under prairie conditions.

Canadian Entomologist published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C15H20O6, Formula: C14H26O2.

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

Markides, K. published the artcileCyanosilicones as stationary phases in gas chromatography. II. Gum and rubber phases on fused silica, Computed Properties of 16974-11-1, the publication is Journal of Chromatography (1983), 267(1), 29-38, database is CAplus.

The presence of cyano groups in the stationary phase may provide useful selective interactions during separation In capillary gas chromatog., the full utility of such interactions will be evident when the columns show high efficiency, good deactivation, high thermal stability, and reproducibility in retention characteristics. Columns that fulfill these requirements were prepared Fused silica capillaries were treated with HCl, silanized at a high temperature with cyclic cyanopropylsiloxane, and statically coated with cyanopropylsilicone gum, which was finally immobilized by in situ crosslinking. Vulcanization is normally inhibited by cyanopropyl groups, but a certain percent of tolyl groups in the gum made crosslinking possible. The usefulness of the cyanosilicone columns is demonstrated by the separation of several samples such as fatty acid Me esters and pheromones.

Journal of Chromatography published new progress about 16974-11-1. 16974-11-1 belongs to esters-buliding-blocks, auxiliary class Aliphatic Chain, name is (Z)-Dodec-9-en-1-yl acetate, and the molecular formula is C14H26O2, Computed Properties of 16974-11-1.

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