Category: 82-73-5

Rotbergs, J.; Oskaja, V. published the artcile< Condensation of 3-bromophthalic anhydride with β-dicarbonyl compounds>, Safety of 4-Bromoisobenzofuran-1,3-dione, the main research area is phthalic anhydride condensation; bromo indandionecarboxylic acid; dicarbonyl compound condensation.

3-Bromophthalic anhydride (I) condensed with AcCH2CO2Et in Ac2O-Et3N gave 85.9% II. Ir spectra of condensation products of I with AcCH2Ac, BzCH2Ac, BzCH2Bz, and CH2(CO2Et)2 were compared.

Uch. Zap. Latv. Univ. published new progress about 82-73-5. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Safety of 4-Bromoisobenzofuran-1,3-dione.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhou, Sha; Zhang, Xiulan; Wei, Wei; Liu, Jingbo; Xiong, Lixia; Yang, Na; Li, Zhengming published the artcile< Design, synthesis and biological activities of novel trifluoromethylated phthalic acid diamides derivatives>, Reference of 82-73-5, the main research area is design synthesis trifluoromethyl phthalic acid diamide agrochem larvicides.

In order to find efficient, eco-friendly lead compounds, 10 novel phthalic acid diamide derivatives containing two trifluoromethylated aromatic amine moieties were designed and synthesized. Their structures were confirmed by 1H NMR, 13C NMR, HRMS and elemental anal. Their insecticidal activities against oriental armyworms and diamondback moths were also evaluated. The preliminary results of biol. evaluation showed that most compounds exhibited moderate to high larvicidal activity. These results provided further insights into the relationship between the structures and biol. activity.

Youji Huaxue published new progress about Agrochemicals. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Reference of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Abt, Arthur F.; Hardy, J. Martin; Farmer, Chester J.; Maaske, Jessie D. published the artcile< Relation of vitamin C to scarlet fever, rheumatic infections and diphtheria in children>, HPLC of Formula: 82-73-5, the main research area is .

The ascorbic acid content of the blood plasma was significantly lowered in 76 patients with scarlet fever. Oral administration of ascorbic acid in large doses did not influence the course of the disease. The plasma ascorbic acid was not significantly altered in 17 patients with rheumatic fever, in 26 with acute rheumatic heart disease, in 2 with chorea or in 8 with acute pharyngeal diphtheria. High temperatures per se did not significantly lower the plasma ascorbic acid or increase its utilization in the body. Fever, accompanied by active infection, may cause an increased ascorbic acid utilization, which is reflected in a decrease in the plasma level and in urinary excretion.

American Journal of Diseases of Children published new progress about Blood plasma. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, HPLC of Formula: 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Boykin, David W.; Baumstark, Alfons L.; Kayser, Margaret M.; Soucy, Chantal M. published the artcile< Oxygen-17 nuclear magnetic resonance spectroscopic study of substituted phthalic anhydrides and phthalides>, Safety of 4-Bromoisobenzofuran-1,3-dione, the main research area is NMR oxygen phthalic anhydride phthalide.

17O chem. shift data (natural abundance) for 3-substituted phthalic anhydrides and 4- and 7-substituted phthalides in acetonitrile at 75° are reported. Steric interactions of substituents ortho to the carbonyl groups result in deshielding effects (9-22 ppm) relative to parent compounds regardless of the electronic character of the substituents. Factors contributing to the deshielding effects are discussed. The relationship between 17O chem. shifts and regiochem. of the phthalic anhydrides is discussed.

Canadian Journal of Chemistry published new progress about NMR (nuclear magnetic resonance). 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Safety of 4-Bromoisobenzofuran-1,3-dione.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Alhijry, Ibraheem A.; El Sherbini, Ashraf M.; El Sherbini, Tharwat M. published the artcile< Measurement of deviations of transition probability of the neutral silver lines at 827.35 and 768.77 nm using OES-technique>, Synthetic Route of 82-73-5, the main research area is silver transition probability Boltzmann plot OES spectrum.

Boltzmann plot of laser produced plasma spectral emission of two Ag I-spectral lines at 827.35 and 768.77 nm was carried out. Surprisingly, two order of magnitude lower inherent transition probabilities of the two Ag I-spectral lines could be monitored using optical emission spectroscopy OES-technique. Nd: YAG laser at 532 nm and incident intensities varying from 1.76 to 3.14 GW/cm2 was used to induce plasma emission of silver targets. Six Ag I-lines were identified using echelle spectrograph facility at 546.54, 520.9, 827.35, 768.77, 328.06 and 338.28 nm in addition to the Ha-line. Corrections against optically thick plasma spectral line emission were routinely implemented while taking into consideration the sensitivity of spectrograph-ICCD combination. The new measured values of transition probabilities were verified during plasma expansion under different laser incident irradiances.

Journal of Quantitative Spectroscopy & Radiative Transfer published new progress about Absorptivity. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Synthetic Route of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Aliboni, Eraldo published the artcile< Vitamin C in human saliva>, Related Products of 82-73-5, the main research area is .

By the method of Farmer and Abt (C.A. 30, 8273.5) the vitamin C content of human saliva (50 cases) was 12-50 (average 23) γ per 100 cc., no remarkable differences being found between men and women, or normal and pathol. subjects.

Clin. odontoiat. published new progress about Saliva. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Related Products of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Matsui, Y; Figi, A; Horikawa, M; Jahangiri Noudeh, Y; Tomozawa, Y; Hashimoto, K; Kaufman, J A; Farsad, K published the artcile< Erratum to ""Arteriopathy after transarterial chemo-lipiodolization for hepatocellular carcinoma"" [Diagn. Interv. Imaging 98 (12) (2017) 827-35].>, Name: 4-Bromoisobenzofuran-1,3-dione, the main research area is .

There is no abstract available for this document.

Diagnostic and interventional imaging published new progress about 82-73-5. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Name: 4-Bromoisobenzofuran-1,3-dione.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kayser, Margaret M. published the artcile< The internal steric push-effect: its consequences on the reactivity of carbonyl functions in 3-substituted phthalic anhydrides>, COA of Formula: C8H3BrO3, the main research area is NMR phthalic anhydride; regioselectivity nucleophilic addition; mol mechanic phthalic anhydride.

The 13C NMR for a number of 3-substituted phthalic anhydrides and corresponding lactones were measured. Substituent effects were discussed. MM2 calculations for several 3-substituted phthalic anhydrides predict that the substituent and the neighboring carbonyl group remain coplanar and within the plane of the aromatic ring. To alleviate the imposed crowding, there is an in-plane distortion of the bond angle of the substituent and the carbonyl function. The observed angle of distortion increases with increasing steric demand of the substituent, in agreement with repulsive van der Waals interaction between those two groups. Diminished reactivity of the ortho carbonyl groups vis-a-vis nucleophiles in 3-substituted phthalic anhydrides may be linked to the internal steric push-effect which causes the displacement of electrons in the CO bond from O to C.

Spectroscopy Letters published new progress about Bond angle. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, COA of Formula: C8H3BrO3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Jorgensen, P. Fischer published the artcile< A mathematical-statistical analysis of titration errors in the determination of ascorbic acid of serum by use of the 2,6-dichlorophenolindophenol method>, Computed Properties of 82-73-5, the main research area is .

373 determinations of ascorbic acid in serum were made, using a slight modification of the method of Farmer and Abt (cf. C.A. 30, 8273.5). The results are divided into 6 groups and the standard deviation determined for each group. The possible sources of error are investigated. Two types of errors can be distinguished: Group (a) comprises the exptl. errors. In this group the standard deviation is constant Group (b) is associated with the chemistry of the analytical method, and the standard deviation is found to be directly proportional to the ascorbic acid concentration The chem. significance of these errors is discussed.

Dansk Tidsskrift for Farmaci published new progress about Blood. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Computed Properties of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ozols, J.; Vanags, G. published the artcile< Bromo-3-ethylidenephthalide and its transformations>, Reference of 82-73-5, the main research area is phthalides bromo; bromo phthalides; ketone aromatic.

A mixture of 7 g. 4-bromophthalic anhydride, 4.4 g. (EtCO)2O and 1.6 g. dry EtCO2Na was heated 3 hrs. at 170-80° and poured into 75 ml. H2O to yield 61% bromo-3-ethylidenephthalide (I), m. 115-16° (CCl4). With alkalis, I did not isomerize, but formed bromopropiophenone-o-carboxylic acid (II) which appeared in a tautomer form as 3-hydroxy-3-ethylbromophthalide (III). To 0.85 g. I in 20 ml. MeOH was added MeONa prepared from 0.08 g. Na and 2 ml. MeOH, and the mixture heated on a water bath 0.5 hr. and worked up to give 0.5 g. III m. 114-15° (EtOH). Similarly, III was obtained from I and 10% KOH. 10 references.

Latvijas PSR Zinatnu Akademijas Vestis, Kimijas Serija published new progress about 82-73-5. 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Reference of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary