Tag: 126.1133

Determination of some acids in alkyds and polyesters by classical and oscillographic polarography with a vibrating dropping-mercury electrode was written by Novak, V.. And the article was included in Plaste und Kautschuk in 1965.Electric Literature of C5H6N2O2 This article mentions the following:

An efficient method is described whereby vibrations from a loudspeaker cone are transmitted through a metal rod to a dropping Hg capillary connected by a rubber ring. The method permits simultaneous determination of maleic (I), fumriac (II), and phthalic (III), or of citraconic (IV), mesaconic (V), and III acids in hydrolyzates of polyesters or alkyds. In 0.04M HCl with 0.5M NH₄Cl, I and II are undissociated and have the same half-wave potential (E_0.5), giving their sum, followed at a distance by the cation of III. In the same medium, IV, V, and III show up sep. I and II are separated in buffers of pH 6.8-7.5, where I anion is readily reduced (-1.46 v.). Between 1 and 5 ml. product from resin, hydrolyzed in Me₂CO by aqueous KOH, 12.5 ml. M NH₄Cl, 1 ml. M HCl, and H₂O to fill a 25-ml. flask was polarographed against a S.C.E., starting at -0.4 v.; E_0.5 were -0.65 v. for I and II, -0.53 for IV, -0.65 for V, and -1.05 for III. The oscillographic determination in the presence of vibrations was greatly improved by insertion of a Ge diode in the circuit. I and II were best determined in a 9:1 mixture of M NH₄Cl and M HCl; IV and V by a 3:1 mixture of the same. Accuracy of the methods is discussed. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7Electric Literature of C5H6N2O2).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. Pyridazines are rare in nature, possibly reflecting the scarcity of naturally occurring hydrazines, common building blocks for the synthesis of these heterocycles. In the past decade, X-ray data were reported with regard to the characterization and structural elucidation of a number of pyridazine-metal complexes, including pyridazine ligands with zinc, nickel, copper, cadmium and ruthenium.Electric Literature of C5H6N2O2

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem

Paper-chromatographic techniques for hydrazides and certain metabolites was written by Greulach, Victor A.;Haesloop, John G.. And the article was included in Anal. Chem. in 1961.Quality Control of 1,2-Dihydro-4-methyl-3,6-pyridazinedione This article mentions the following:

A large number of hydrazides were separated by descending chromatography by using either 7:1:2 iso-PrOH:NH₄OH:H₂O or 5:1:4 BuOH:HOAc:H₂O. Alternatively, 2-dimensional separation could be used, developing with each solvent in turn. Spots were visualized by spraying with a freshly prepared 1:1 mixture of 1% FeCl₃ and 1% K₃Fe(CN)₆. Some sugars, including sucrose, glucose, mannose, fructose, arabinose, xylose, and ribose, and some amino acids, including cysteine, asparagine, histidine, proline, valine, tyrosine, and tryptophan, also gave a color with the reagent. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7Quality Control of 1,2-Dihydro-4-methyl-3,6-pyridazinedione).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. Pyridazine-based compounds continued to be a great source of biologically active compounds as evidenced by the number of publications which emerged in 2021. Pyridazine and derivatives coordinate readily with transition metals to form complexes and catalysts with synthetic utility.Quality Control of 1,2-Dihydro-4-methyl-3,6-pyridazinedione

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem

Relations between structure and activity of maleic hydrazide analogs and related compounds was written by Parups, E.;Hoffman, I.;Morley, H. V.. And the article was included in Canadian Journal of Biochemistry and Physiology in 1962.Formula: C5H6N2O2 This article mentions the following:

The growth- inhibiting activities of a number of compounds structurally related to maleic hydrazide (I) were examined by the technique of bud-growth inhibition. The degree of inhibitory activity of I derivatives depended on tile ease with which the plant can split off substituents. Straight-chain compounds which partially resemble I were not as active as the parent compound, and ring closure was necessary for full activity. Residue data for some of the tested compounds showed that activity failure was not due to lack of uptake and translocation. The anal. procedure for I is shown to be valid for the quant. determination of hydroxymethyl-I and N-benzoyl-I. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7Formula: C5H6N2O2).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. The pyridazine structure is a popular pharmacophore which is found within a number of herbicides such as credazine, pyridafol and pyridate. In the past decade, X-ray data were reported with regard to the characterization and structural elucidation of a number of pyridazine-metal complexes, including pyridazine ligands with zinc, nickel, copper, cadmium and ruthenium.Formula: C5H6N2O2

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem

Production of hydrocarbons from a green algae (Oscillatoria) with exploration of its fuel characteristics over different reaction atmospheres was written by Kawale, Harshal D.;Kishore, Nanda. And the article was included in Energy (Oxford, United Kingdom) in 2019.HPLC of Formula: 5754-18-7 This article mentions the following:

Authors conducted non-catalytic, catalytic, and hydropyrolysis at 550掳C temperature and 1 bar pressure to produce biofuels from an ignored algal biomass of Oscillatoria by thermo-chem. degradation study in a tubular reactor having an internal diameter of 25 mm and 300 mm of active length covered by a furnace of a single heating zone. The catalysts used for the catalytic pyrolysis and hydropyrolysis study are TiO₂:ZnO on 1:1 basis. Characterization of bio-oils by Fourier Transform IR Spectroscopy (FTIR) shows substantial variation in functional groups of all three types of bio-oils. Gas Chromatog.-Mass Spectroscopy (GCMS) gives a detailed list of available hydrocarbons in bio-oil samples and proton NMR confirms the functionality of bio-oil by available proton assignments. Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) shows morphol. and the structural analogy of biochars with respect to biomass. Calorific values of three types of bio-oils ranges from 16.597 to 16.664 MJ/kg; and revealed that this particular biomass has potential as a resource of feedstock with an approx. yield of one-third of biomass on the dry weight basis. The pH of these bio-oils obtained from green algae varies in the range of 8.25 to 6.07 that indicates the less number of oxygenated compounds unlike very low pH bio-oils obtained from other types of biomass feedstock. Addnl., present results revealed that these bio-oils include formative compounds of most popular hydrocarbons, i.e., benzene, toluene and xylene (BTX). Further, they also include furans, phenols, benzaldehyde, guaiacol, caprolactam, styrene, oximes, etc. which can be used as green chems. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7HPLC of Formula: 5754-18-7).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. The pyridazine structure is a popular pharmacophore which is found within a number of herbicides such as credazine, pyridafol and pyridate. The activity depends upon the changes of substituted groups in the pyridazine ring system resulting in different biological activities. In addition, the natural pyrimidine bases uracil, thymine, and cytosine, which are constituents of the nucleic acids, are found to be the most important naturally occurring diazines.HPLC of Formula: 5754-18-7

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem

Determination of some acids in alkyds and polyesters by classical and oscillographic polarography with a vibrating dropping-mercury electrode was written by Novak, V.. And the article was included in Plaste und Kautschuk in 1965.Electric Literature of C5H6N2O2 This article mentions the following:

An efficient method is described whereby vibrations from a loudspeaker cone are transmitted through a metal rod to a dropping Hg capillary connected by a rubber ring. The method permits simultaneous determination of maleic (I), fumriac (II), and phthalic (III), or of citraconic (IV), mesaconic (V), and III acids in hydrolyzates of polyesters or alkyds. In 0.04M HCl with 0.5M NH₄Cl, I and II are undissociated and have the same half-wave potential (E_0.5), giving their sum, followed at a distance by the cation of III. In the same medium, IV, V, and III show up sep. I and II are separated in buffers of pH 6.8-7.5, where I anion is readily reduced (-1.46 v.). Between 1 and 5 ml. product from resin, hydrolyzed in Me₂CO by aqueous KOH, 12.5 ml. M NH₄Cl, 1 ml. M HCl, and H₂O to fill a 25-ml. flask was polarographed against a S.C.E., starting at -0.4 v.; E_0.5 were -0.65 v. for I and II, -0.53 for IV, -0.65 for V, and -1.05 for III. The oscillographic determination in the presence of vibrations was greatly improved by insertion of a Ge diode in the circuit. I and II were best determined in a 9:1 mixture of M NH₄Cl and M HCl; IV and V by a 3:1 mixture of the same. Accuracy of the methods is discussed. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7Electric Literature of C5H6N2O2).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. Pyridazines are rare in nature, possibly reflecting the scarcity of naturally occurring hydrazines, common building blocks for the synthesis of these heterocycles. In the past decade, X-ray data were reported with regard to the characterization and structural elucidation of a number of pyridazine-metal complexes, including pyridazine ligands with zinc, nickel, copper, cadmium and ruthenium.Electric Literature of C5H6N2O2

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem

Paper-chromatographic techniques for hydrazides and certain metabolites was written by Greulach, Victor A.;Haesloop, John G.. And the article was included in Anal. Chem. in 1961.Quality Control of 1,2-Dihydro-4-methyl-3,6-pyridazinedione This article mentions the following:

A large number of hydrazides were separated by descending chromatography by using either 7:1:2 iso-PrOH:NH₄OH:H₂O or 5:1:4 BuOH:HOAc:H₂O. Alternatively, 2-dimensional separation could be used, developing with each solvent in turn. Spots were visualized by spraying with a freshly prepared 1:1 mixture of 1% FeCl₃ and 1% K₃Fe(CN)₆. Some sugars, including sucrose, glucose, mannose, fructose, arabinose, xylose, and ribose, and some amino acids, including cysteine, asparagine, histidine, proline, valine, tyrosine, and tryptophan, also gave a color with the reagent. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7Quality Control of 1,2-Dihydro-4-methyl-3,6-pyridazinedione).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. Pyridazine-based compounds continued to be a great source of biologically active compounds as evidenced by the number of publications which emerged in 2021. Pyridazine and derivatives coordinate readily with transition metals to form complexes and catalysts with synthetic utility.Quality Control of 1,2-Dihydro-4-methyl-3,6-pyridazinedione

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem

Relations between structure and activity of maleic hydrazide analogs and related compounds was written by Parups, E.;Hoffman, I.;Morley, H. V.. And the article was included in Canadian Journal of Biochemistry and Physiology in 1962.Formula: C5H6N2O2 This article mentions the following:

The growth- inhibiting activities of a number of compounds structurally related to maleic hydrazide (I) were examined by the technique of bud-growth inhibition. The degree of inhibitory activity of I derivatives depended on tile ease with which the plant can split off substituents. Straight-chain compounds which partially resemble I were not as active as the parent compound, and ring closure was necessary for full activity. Residue data for some of the tested compounds showed that activity failure was not due to lack of uptake and translocation. The anal. procedure for I is shown to be valid for the quant. determination of hydroxymethyl-I and N-benzoyl-I. In the experiment, the researchers used many compounds, for example, 1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7Formula: C5H6N2O2).

1,2-Dihydro-4-methyl-3,6-pyridazinedione (cas: 5754-18-7) belongs to pyridazine derivatives. The pyridazine structure is a popular pharmacophore which is found within a number of herbicides such as credazine, pyridafol and pyridate. In the past decade, X-ray data were reported with regard to the characterization and structural elucidation of a number of pyridazine-metal complexes, including pyridazine ligands with zinc, nickel, copper, cadmium and ruthenium.Formula: C5H6N2O2

Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem