Sodium-2-oxo-propanesulfonate (acetone sulfonate) was found to be a competitive inhibitor of acetoacetate carboxy lyase (acetoacetic decarboxylase, EC 4.1.1.4) the KI of which was numerically equal to the K, for acetoacetate at all temperatures investigated. K,,, like Kr in this case is therefore concluded to represent a dissociation constant. AH for the dissociation of either acetoacetate or a...

A Zn(II) amidinium porphyrin is the excited-state electron donor (D) to a naphthalene diimide acceptor (A) appended with either a carboxylate or sulfonate functionality. The two-point hydrogen bond (...[H(+)]...) formed between the amidinium and carboxylate or sulfonate functionalities establishes a proton-coupled electron transfer (PCET) pathway for charge transfer. The two D...[H(+)]...A asse...

Employing the strategy of quaternization of the 2,2' N atoms of the conjugated bipyridine ligand 1,4-bis[2-(4'-methyl-2,2'-bipyrid-4-yl)ethenyl]benzene (L), a polypyridyl complex of ruthenium(II) was tethered on the surface of zeolite Y. Electrochemical and spectroscopic properties of the complex suggest that, upon visible photoexcitation of the MLCT band, the electron is localized on the conju...

The asymmetric unit of the title compound, C(6)H(6)Cl(2)N(+)·C(6)H(4)ClO(3)S(-)·H(2)O, contains two 2,4-dichloro-anilinium cations, two 4-chloro-phenyl-sulfonate anions and two water mol-ecules. The three H atoms of the positively charged NH(3) group have two O atoms of the negatively charged sulfonate anion and one O atom of the water mol-ecule as acceptors. Similarly, the two H atoms of the w...

Extraction of 2-(2-pyridylazo)-1-naphthol-4-sulfonate anion with solvated hydroxonium ion was carried out using 14 kinds of alcohols and 1-octanol/octane mixed solvents as a solvent at 25 degrees C. Alcohols are 1-pentanol, 1-hexanol, 1-heptanol, 2-heptanol, 3-heptanol, 4-heptanol, 1-octanol, 2-octanol, 3-octanol, 1-nonanol, 2-nonanol, 3-nonanol, 5-nonanol and 1-decanol. Among them, 1-octanol w...

Background. The use of sodium polystyrene sulfonate in decreasing serum potassium has recently been questioned due to the lack of documented effectiveness. Methods. A retrospective cohort analysis of all hospitalized patients who received sodium polystyrene sulfonate over four months was performed. The change in serum potassium was noted over a period of 24 hours. Patients who received any othe...

IN THE ASYMMETRIC UNIT OF THE TITLE SALT [SYSTEMATIC NAME: 2,4-diamino-5-(4-chloro-phen-yl)-6-ethyl-pyrimidin-1-ium pyri-dine-3-sulfonate], C(12)H(14)N(4)Cl(+)·C(5)H(4)NSO(3) (-), there are two independent pyrimethaminium cations and two 3-pyridine sulfonate anions. Each sulfonate group inter-acts with the corresponding protonated pyrimidine ring through two N-H⋯O hydrogen bonds, forming a cycl...

Perfluorobutane sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), and perfluorooctane sulfonate (PFOS) are stable perfluoroalkyl sulfonate (PFAS) surfactants, and PFHxS and PFOS are frequently detected in human biomonitoring studies. Some epidemiological studies have shown modest positive correlations of serum PFOS with non-high-density lipoprotein (HDL)-cholesterol (C). This study investiga...

linear alkylbenzene sulfonate (labs) is an anionic surfactant widely used all over the world. they will eventually end-up and accumulate in household or industrial sewage. due to their high foaming capabilities which can cause numerous problems in sewage treatment facilities as well as direct toxic effects on many different organisms in ecosystem they are generally considered as serious polluta...

Detection of sulfur-fumigated Paeoniae Alba Radix (PAR) in different complex preparations is challenging due to the relatively lower content of PAR and interference from more complicated components in complex preparations with different multiple constituent herbs. In this study, a high performance liquid chromatography- triple-quadrupole tandem mass spectrometry method was developed for detecti...