Metabolite of methadyl acetate, q.v. Prepn: A. Pohland, US 3021360 (1962 to Lilly). Metabolism: G. L. Henderson et al., Drug Metab. Dispos. 5, 321 (1977); M. Man et al., ibid. 8, 55 (1980). HPLC determn: C.-H. Kiang et al., J. Chromatogr. 222, 81 (1981).