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Determination of the degree of substitution of hydroxypropylated β-cyclodextrins by differential scanning calorimetry

✍ Scribed by Cs. Novák; G. Pokol; J. Sztatisz; L. Szente; J. Szejtli

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
239 KB
Volume
282
Category
Article
ISSN
0003-2670

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✦ Synopsis

The general specifications of commercially available hydroxypropylated /3-cyclodextrins (HPBCDs) usually give information on the solubility, solubilizing potency and average degree of substitution (DS) of a given product. The DS value is regarded as suitable for quality control purposes. This paper describes a differential scanning calorimetric method to determine the DS, based on the fact that the glass temperature interval of the amorphous part of the sample depends on the degree of substitution of the HPBCD.

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