1-Xylylazo-2-naphthol
Title: 1-Xylylazo-2-naphthol
CAS Registry Number: 85-82-5
CAS Name: 1-[(2,4-Dimethylphenyl)azo]-2-naphthalenol
Additional Names: C.I. Solvent Orange 7; 1-(2,4-xylylazo)-2-naphthol; FD & C Red no. 32; Oil Red XO; Ext. D & C Red no. 14; C.I. 12140
Molecular Formula: C18H16N2O
Molecular Weight: 276.33
Percent Composition: C 78.24%, H 5.84%, N 10.14%, O 5.79%
Literature References: Once reported as 2,5-xylylazo deriv. Prepd by coupling diazotized m-xylidene with 2-naphthol: J. M. Tedder, J. Chem. Soc. 1957, 4003; R. B. Smyth, G. G. McKeown, J. Chromatogr. 5, 395 (1961). Metabolism: J. L. Radomski, J. Pharmacol. Exp. Ther. 136, 378 (1962).
Properties: Red needles, mp 166°. Insol in water; sol in ethanol, acetone, benzene.
Melting point: mp 166°

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