Detail of "2423-71-4"

CAS Number:
2423-71-4
Name:
Phenol,2,6-dimethyl-4-nitro-
Molecular Structure:
Formula:
C8H9 N O3
Molecular Weight:
167.16
Synonyms:
2,6-Xylenol,4-nitro- (6CI,7CI,8CI); 2,6-Dimethyl-4-nitrophenol; 4-Nitro-2,6-dimethylphenol;4-Nitro-2,6-xylenol; NSC 2990
Density:
1.263g/cm³
Melting Point:
168 °C (dec.)(lit.)
Boiling Point:
322.8°Cat760mmHg
Flash Point:
145.3°C
Hazard Symbols:
Risk Codes:
36/37/38
Safety:
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-36
WGK Germany 3

RTECS ZE8225000

Hazard Note Irritant
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A concise preparation of 2,6-dimethyl-4-nitrochlorobenzene: A concise preparation of 2,6-dimethyl-4-nitrochlorobenzene. Wright, Stephen W. (Pfizer Cent. Res., Groton, CT 06340, USA). Organic Preparations and Procedures International, 29(1), 128-131 (English) 1997 Organic Preparations and Procedures, Inc. CODEN: OPPIAK.There are some commonly used reagents with their cas registry numbers 2423-71-4 and 38560-96-2 in this article. ISSN: 0030-4948. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Treatment of 2,6-dimethyl-4-nitrophenol with phosphorus pentachloride and phenol at 210-20° gave 40% title compd. .

pH/Organic Solvent Double-Gradient Reversed-Phase HPLC: Wiczling, Pawel; Markuszewski, Michal J.; Kaliszan, Michal; Kaliszan, Roman (Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdansk, Gdansk 80-416, Pol.). Analytical Chemistry, 77(2), 449-458 (English) 2005 American Chemical Society. CODEN: ANCHAM. ISSN: 0003-2700. DOCUMENT TYPE: Journal CA Section: 79 (Inorganic Analytical Chemistry) A new reversed-phase HPLC (RP HPLC) procedure was theor. and exptl. established. The approach consists of the simultaneous development of a gradient of pH and of the org.Several reagents with their cas registry numbers 76-57-3 and 2423-71-4 are used here. modifier in the mobile phase. The proposed theor. model of the pH/org. solvent double-gradient RP HPLC allows detn. of both pKa and the lipophilicity parameter of the ionized and the nonionized form of the analyte and prediction of the retention times at specific sepn. conditions as well as bandwidth for all analytes. The model provides a rational basis for optimization of sepn. of ionizable analytes at any given chromatog. mode and anal. conditions. In the case of pH/org. solvent double-gradient RP HPLC, a compression of analyte peak and its reduced tailing can be expected. .