References
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- Assay(area percent) by liquid chromatography was 93.7% 1-methylamino-4-bromoanthraquinone, 3.3% starting material, 1.0% 1-methylamino-2-bromoanthraquinone, and 0.7% 1-methylamino-2,4-dibromoanthraquinone.
- 1945 . British Intelligence Objectives Sub-Committee(BIOS) , Volume 22 ( 1484 )
- Chamberlin , K. S. U. S. Patent 5 . 117 014 . 1992 .