1 -Phenyl-2:3-dimethyl-5-pyrazolone

This substance may be conveniently methylated with dimethyl sulphate to 3deld 1-phenyl-2 3-dimethyl-5-pyrazolone or antipyrin (III) ... 

SYNS DIMETHYLOXYQUINAZINE 2,3-DIMETHYL-1-PHENYL-3-PYRAZOLIN-5-ONE 2,3-DIMETHYL-l-PHENYL-5-PYRAZOLONE OXYDIMETHYL-QUINAZINE PHENAZONE (pharmaceutical) 1-PHENYL-2,3-DIMETHYL-PYRAZOLE-5-ONE 1-PHENYL-2,3-DIMETHYL-5-PYRAZOLONE... 

Phenyl-2,3-dimethylpyrazole-5-one 1-Phenyl-2,3-dimethyl-5-pyrazolone. See Antipyrine Phenyidimethylsilane CAS 766-77-8 EINECS/ELINCS 212-170-5 Synonyms Dimethylphenylsilane Silane, dimethylphenyl- Silane, phenyldimethyl-Empirical C8Hi2Si... 

Diethylaminoethyl 1-phenyl-2,3-dimethyl-5-pyrazolone-4-carboxylate and 7-hydroxyethyltheophylline stirred 8 hrs. at 200-220° in vacuo -> 7-theophylIin-ethyl 1-phenyl-2,3-dimethyl-5-pyrazolone-4-carboxylate. Y 73%. — The startg. ester-base acts as its own basic catalyst. F. e. s. T. Eckert, Arch. Pharm. 298, 337 (1965). 

METHYLAMINOPHENYLDIMETHYLPYRAZOLONE METHANESULFONATE SODIUM l-PHENYL-2,3-DIMETHYL-5-PYRAZOLONE-4-METHYLA nNO-METHANESULFONATESODIUM l-PHENYL-2,3-DIMETHYLPYRAZOLONE-(5)-4-METHYLA.MINO-METHANESULFONICACID SODIUM PHENYL DIMETHYL PYRAZOLON METHYL AMINOMETH-ANE SODIUM SULFONATE 4-SODIUM METHANESULFONATE METHYLAMINE-ANTIPYRINE SODIUM METHYLAMINO-ANTIPYRINE METHANESULFONATE... 

PHENYL DIMETHYL PYRAZOLON METHYL AMINOMETHANE SODIUM SULFONATE see AMK500... 

When the methyl-phenyl-pyrazolone is heated with methyl iodide in methano-lie solution, it acts in the form (D), the — NH— group undergoing methy lation, with the formation of the hydriodide of 2,3-dimethyl- l-phenyl-5 Pyrazolone, or antipyrine (F), a drug used (either as the free base or as the... 

Determination of tungsten as the trioxide (tannic acid-phenazone method) Discussion. Tungstic acid is incompletely precipitated from solutions of tungstates by tannic acid. If, however, phenazone (2,3-dimethyl-l-phenyl-5-pyrazolone) is added to the cold solution after treatment with excess of tannic acid, precipitation is quantitative. This process effects a separation from aluminium, and also from iron, chromium, manganese, zinc, cobalt, and nickel if a double precipitation is used. 

Antipyrine (l,5-dimethyl-2-Phenyl-3-Pyrazolone) is known to form hexakis complexes with the lanthanides and yttrium salts 38). The bright green fluores-... 

Antipyrine or 2,5-Dimethyl-l-phenyl-4-pyrazoline-3-one, listed in Beil as 1-Phenyl-2.5-dimethyl-pyrazolon-(3),(HjC)C-N(C6H5)-N(CHj)... 

ANTIPYRINYLMETHYLAMINO)METHANESULFONIC ACID SODIUM SALT METHYLAMINO-ANTIPYRINE SODIUM METHANESULFONATE 4-METHYLA NO-1,5-DIMETHYL-2-PHENYL-3-PYRAZOLONE SODIUM METHANESULFONATE ... 

Dimethyl-1-phenyl-5-pyrazolone Oxydimethylquinazine Phenazone 1-Phenyl-... 

Dimethyl-1 -phenyl-3-pyrazolin-5-one 2,3-Dimethyl-1 -phenyl-5-pyrazolone. See Antipyrine... 

Phenyl-2-methyl-2-propanol. See Dimethyl benzyl carbinol 3-Phenyl-2-methyl-propen-2-ol-1. See Methylcinnamyl alcohol 1 -Phenyl-3-methyl-5-pyrazolone CAS 89-25-8 EINECS/ELINCS 201-891-0 Synonyms Cl developer 1 Developer Z 2.4-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one 3-Methyl-1 -phenyl-2-pyrazolin-5-one 3-Methyl-1 -phenyl-5-pyrazolone Norantipyrine Norphenazone 1-Phenyl-3-methyl-5-oxo-2-pyrazoline 1-Phenyl-3-methylpyrazolone-5 5-Pyrazolin-5-one, 3-methyl-1-phenyl-5-Pyrazolone, 3-methyl-1-phenyl-Empirical C10H10N2O Formula C6HsNN C(CH3)CH2CO Properties Wh. to It. yel. powd. orcryst. sol. 10-50 mg/ml in DMSO, 95% ethanol, acetone si. sol. in benzene sol. < 1 mg/ml in water insol. in ether, petrol, ether m.w. 174.20 vapor pressure < 0.01 mm Hg (20 C) m.p. 127-130 C b.p. 287 C (105 mm) ref. index 1.637 (20 C)... 

Chloromethylated copolymers of styrene with divinyl benzene undergo Friedel-Craft type reactions in condensations with l-phenyl-3-methylpyrazolone or with 1-phenyl-2,3-dimethyl-pyrazolone-5 in the presence of either ZnCl2, BF3, or SnCla [208] ... 

The absorbance of the red quinonamine dye formed in the reaction of phenol and 4-amino-l,5-dimethyl-2-phenyl-3-pyrazolone (4-aminoantipyrine) with periodate ions has been used in the estimation of periodate consumption in the oxidation of starch and other carbohydrates. The evaluation of the use of pyridine as a solvent in the oxidation of water-insoluble carbohydrates by periodate has been reported. The three types of dialdehydes produced by this oxidation were converted to the TMS ethers of the dithioacetals and measured by g.l.c. Oxidation proceeded in a normal Malapradian fashion but more slowly than it does in water. 

CiiHioNer 3 -Methyl-3-phenylbistriazolyl, 43B, 273 Cl1H1iBrNOj, 4-Bromo-2,3-dimethyl-1-phenyl-5-pyrazolone, 22, 785 Cl1H12BrNO, cis-4-(p-Bromophenyl)-5-methyl-2-pyrrolidinone, 44B, 192 C11H12CI2N2O, o-2-(2,6-Dichlorophenoxyethyl)imidazolidine, 46B, 2.06 C11H12N2O, Antipyrine, 39B, 164... 

Antipyrine (2,5-dimethyl-l-phenyl-3-pyrazolone) (LXVl) is partly conjugated and excreted by dogs, cats and rabbits but the nature of the conjugate is obscure (204). 

Excellent separation of iodide from I-labeled antipyrene (4-iodo-l,5-dimethyl-2-phenyl-3-pyrazolone) has been obtained by paper chromatography, thin-layer chromatography, and high-voltage electrophoresis (381). 

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