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NkówáCarbromal synthesis.svg
English: Prepd by heating urea (to ~50°) with a-bromo-a-ethylbutyryl bromide (C2H5)2CBrCOBr, see DE 225710 (1910); Frdl. 10, 1160; Chem. Zentralbl. 1910, II, 1008. Patent literature: Slotta, Grundriss der modernen Arzneistoff-Synthese (Stuttgart, 1931); H. P. Kaufmann, Arzneimittel-Synthese (Berlin, 1953).
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