9,10-Dimethyl-1,2-benzanthracene
Title: 9,10-Dimethyl-1,2-benzanthracene
CAS Registry Number: 57-97-6
CAS Name: 7,12-Dimethylbenz[a]anthracene
Additional Names: 1,4-dimethyl-2,3-benzphenanthrene
Molecular Formula: C20H16
Molecular Weight: 256.34
Percent Composition: C 93.71%, H 6.29%
Literature References: Synthesis from o-(a-methyl-a-1-naphthyl)toluic acid: Newman, J. Am. Chem. Soc. 60, 1141 (1938). From 9,10-dimethyl-9,10-dihydroxy-9,10-dihydro-1,2-benzanthracene: Bachmann, Chemerda, J. Am. Chem. Soc. 60, 1023 (1938). From 9,10-dimethyl-9,10-dimethoxy-9,10-dihydro-1,2-benzanthracene: eidem, ibid. 61, 2358 (1939). From 9-methyl-1,2-benzanthracen-10-one by a Reformatsky reaction: Mikhailov, Chernova J. Gen. Chem. USSR 9, 2171 (1939), C.A. 34, 4068 (1940).
Properties: Plates, leaflets from acetone-alc, faint greenish-yellow tinge. mp 122-123°. Maximum fluorescence at 440 nm: C.A. 38, 1276 (1944). Freely sol in benzene; moderately sol in acetone; slightly sol in alcohol. Insol in water. May be solubilized in water by purines such as caffeine, tetramethyluric acid. The nucleosides, adenosine, and guanosine also show a solvent action.
Melting point: mp 122-123°

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