Abstract
X-Ray diffraction and IR spectrophotometry showed that testosterone crystallized from octanol had a different form from hat crystallized from the other C5 to C10 alkanols. Differential scanning calorimetry thermograms and melting points were similar for all crystallizates, but the heat of fusion of the octanol product was greater than the others. Purity determinations by DSC revealed that the samples were at least 0.99 mole fraction pure, indicating they were polymorphs, rather than solvates. This was confirmed by thermogravimetric and elemental analysis. Methyltestosterone behaved in a similar manner, but the properties of methandienone, mestanolone and nandrolone were not affected by the nature of the crystallizing solvent.
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