What's the difference between dimethylphenol and xylenol?
Dimethylphenol
Definition:
Example Sentences:
(1) The 24-h excretion of the urine metabolites of m-xylene was decreased by 22-24% in mixed exposures: the excretion of methylhippuric acid was decreased (29%), but that of 2,4-dimethylphenol increased (9-35%).
(2) The isomerization of 1,4-dimethylbenzene oxide to 2,4-dimethylphenol is analogous to the methyl migration observed in the enzymatic conversion of 4-methylphenylalanine to 3-methyltyrosine with phenylalanine hydroxylase.
(3) Antibody inhibition studies showed the major importance of cytochrome P-450-PB-B2 for the formation of both primary m-xylene metabolites (3-methylbenzylalcohol and 2,4-dimethylphenol) in lung microsomes.
(4) Formation of 2,6-dimethylphenol is microsomal and is optimal under aerobic conditions.
(5) Further, the phenol analog 2,6-dimethylphenol, which can not be hydroxylated, competes with phenol for the uptake system.
(6) When resting P. stutzeri cells were incubated with 2,3-dimethylphenol, the reaction mixture turned greenish yellow and showed spectral properties identical to those of the 3,4-dimethylcatechol meta ring fission product.
(7) The N-deacetylated product 4-amino-2,6-dimethylphenol rapidly underwent autoxidation to form 2,6-dimethylbenzoquinone imine and was highly cytotoxic to hepatocytes at 200-300 microM.
(8) Pseudomonas strain CF600 is able to utilize phenol and 3,4-dimethylphenol as sole carbon and energy source.
(9) The 2-oxoglutarate was reacted with hydroxylamine hydrochloride to give diethyl 4-14C-2-hydroxyiminoglutarate which was then reduced with a LiAlH4, (-)-N-methylephedrine and 3,5-dimethylphenol mixture to give 4-14C-1-glutamic acid.
(10) Glucose autoclaved in an alkaline phosphate solution (heated glucose+salts, HGS) results in the production of a moiety that is nonmutagenic but can interact with a series of 4-[2-(aryl)ethenyl]-2,6-dimethylphenols to result in an increase in bacterial revertants that is dependent on the amount of HGS in the minimal agar plates.
(11) The released product, 3,5-dibromo-4-hydroxyaniline, reacts with 2,5-dimethylphenol to produce a blue quinone monoimine in the presence of ascorbate oxidase (EC 1.10.3.3).
(12) Model cross-linked systems have been prepared by reacting amino acids or alkylamines with formaldehyde and various amino acid model compounds such as 2,4-dimethylphenol (tyrosine), 3-methylindole (tryptophan) and alkylamides (glutamine, asparagine.
(13) Then, poly(A)+RNA fractions were selectively stained by 3,5-dimethylphenol in the presence of FeCl3 at pH 2.35.
(14) Myeloperoxidase catalyzed oxidation of other substrates which proceed via one electron intermediates; 2,6-dimethylphenol, N,N,N',N'-tetramethyl-phenylenediamine and luminol, were all stimulated by methimazole providing further evidence for a methimazole free radical.
(15) Catechol 2,3-oxygenase was induced by growth on o-xylene or on 2,3- or 3,4-dimethylphenol.
(16) Furthermore, cresols, chlorophenols, 3,4-dimethylphenol, and 4-chloro-m-cresol were metabolized as sole substrates by phenol-grown resting cells of strain EKII.
(17) Acid treatment of cis-p-xylene dihydrodiol resulted in the formation of 2,5-dimethylphenol.
(18) The N-deacetylated product could be trapped with glutathione as 3-(glutathion-S-yl)-4-amino-2,6-dimethylphenol in 3,5-dimethyl-NAPQI-treated hepatocytes but not in hepatocytes pretreated with bis(p-nitrophenyl) phosphate, indicating that N-deacetylation activity had been inhibited.
(19) strain CF600 grows efficiently on phenol, cresols, and 3,4-dimethylphenol via a plasmid-encoded multicomponent phenol hydroxylase and a subsequent meta-cleavage pathway.
(20) The organism grew on 2,3- and 3,4-dimethylphenol but not on 2-methylbenzyl alcohol, o-tolualdehyde, or o-toluate.
Xylenol
Definition:
(n.) Any one of six metameric phenol derivatives of xylene, obtained as crystalline substances, (CH3)2.C6H3.OH.
Example Sentences:
(1) These criteria are applied to para-chloro-meta-xylenol (PCMX), a compound used with increasing frequency in health care personnel handwashing agents.
(2) Calcein, calcein blue, and xylenol orange produced green, blue, and red fluorescence, respectively.
(4) This manuscript reports the results of an investigation into the suitability of the ferrous sulfate-benzoic acid-xylenol orange (FBX) dosimeter for measurement of small absorbed doses caused by radionuclide solutions mixed with the dosimeter solution.
(5) The regulation of the inducible set of gentisate pathway enzymes used by Pseudomonas alcaligenes (P25X1) has been studied in strains derived from mutant strains of P25X1 that had lost the constitutive enzymes that degrade m-cresol, 2,5-xylenol and 3,5-xylenol.
(6) After extractive acetylation, the derivatives of all cresols and xylenols were completely separated on a Se-54 capillary column.
(7) An automated method, based on the chelating reaction of calcium disodium edetate with zirconium and the subsequent determination of excess zirconium reacted with xylenol orange, was developed.
(8) Two distinct NAD+-dependent m-hydroxybenzyl alcohol dehydrogenases were purified from cells grown on 3,5-xylenol.
(9) Twenty-four-hour IC50 values (50% immobilization concentration) for phenol, o-cresol, m-cresol, p-cresol, six xylenols, and three trimethylphenols were determined for Daphnia magna under static conditions.
(10) The oxidation product of 2,5-xylenol was identified as 3-hydroxy-4-methylbenzoic acid.
(11) In ten patients with severe chronic bronchitis and in a further 23 with planned resection of lung, tonsils or larynx, 500 mg doses, single or multiple, of xibornol (6-isobronyl-3, 4-xylenol) were administered for an antibacterial effect.
(12) Bone formation of fractured fibulae stimulated by pulsed electromagnetic fields (PEMF), PGE2, and combination of both was assessed with roentgenography and fluorescent labelling compounds, tetracycline, xylenol orange, and calcein.
(13) The filtrate is evaporated to dryness, redissolved in water, and reacted with 2,4-xylenol in the presence of sulfuric acid to form 6-nitro-2,4-xylenol.
(14) The addition of the laccase reversed the inhibitory effect of 2,6-xylenol, 4-chloro-2-methylphenol, and p-cresol.
(15) The fluorescent calcium binding dyes xylenol orange, calcein green, and tetracycline were used successfully to sequentially label new bone deposition and bone remodeling during the healing of rigidly fixed humeral fractures in the chicken.
(16) The calcium binding fluorochromes calcein, calcein blue, and xylenol orange were investigated, with each fluorochrome being included in the alkaline phosphatase incubating medium and used in a single-step procedure.
(17) When supplemented with ATP, CoA, succinate and Mg(2+) ions, an enzyme system from cells grown with 2,5-xylenol formed pyruvate from d- but not from l-citramalate.
(18) Several vital dyes are used (tetracycline, calcein, alizarin, xylenol), but it is not known whether the histomorphometric results they provide are equivalent.
(19) No cross sensitivity to 4-chloro-3,5 xylenol was seen.
(20) Complete separation of the mixture has been obtained, except for phenol and o-cresol and o-ethylphenol and 3,5-xylenol whose peaks overlapped, and 2- and 3-methylindoles which were poorly separated.