Prepd from 1-deoxy-1-(3,4-dimethyl-6-phenylazo)anilino-d-galactitol and barbituric acid: Berezovskii, Eremenko, Zh. Obshch. Khim. 32, 4056 (1962), C.A. 59, 736b (1963). Structure: Emerson et al., J. Biol. Chem. 160, 165 (1945). Pharmacology: Lane, Brindley, Proc. Soc. Exp. Biol. Med. 116, 57 (1964). Produces congenital malformations in animals: Nelson et al., J. Nutr. 58, 125 (1956); Miller et al., J. Biol. Chem. 237, 968 (1962); Mackler, Pediatrics 43, 915 (1969).