Monomeric forms of the acid ionophore lasalocid A (X-537A) from polar solvents

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Science  24 Jun 1977:
Vol. 196, Issue 4297, pp. 1441-1443
DOI: 10.1126/science.867039


X-ray structural analyses have been carried out on the free acid of lasalocid A (X-537A) and on the sodium salt, both crystallized from methanol solution. In each case the structure is monomeric with one molecule of methanol complexing to the free acid and to the salt.