Antibiotic substance produced by a Nocardia isolated from old bee-honeycombs: Stoll et al.,Schweiz. Z. Pathol. Bakteriol.14, 225 (1951); Helv. Chim. Acta34, 862 (1951). Structure: Keller-Schierlein, Prelog, ibid.44, 1981 (1961).
Properties
Needles from hot methanol, mp 192-195°. Optically inactive. Has no basic
properties. Soluble in hot water, methanol. An 0.5% aq soln at room
temp has a pH of 4.55.