Estimation of the degree of crystallinity in digoxin by X‐ray and infrared methods
1977
The X-ray procedure for estimation of the degree of crystallinity in digoxin is based upon measurement of the total X-ray scattering and the scattering from crystalline regions of the drug. The infrared procedures are based upon measurement of the peak height ratios, 1775/1618 and 3095/1618 cm−1. Correlation between results obtained by the two methods is good. These methods are of value in the physico-chemical characterization of digoxin, particularly as the properties may be altered by comminution.
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