The effects of cooling rate on solid phase transitions and associated vial breakage occurring in frozen mannitol solutions

NA Williams, Y Lee, GP Poll… - PDA Journal of …, 1986 - journal.pda.org
When mannitol solutions were frozen in glass vials at typical rates (0.3–1C/min) and
warmed while monitoring the electrical resistance of the frozen solution, a sharp increase in …

Vial breakage by frozen mannitol solutions: correlation with thermal characteristics and effect of stereoisomerism, additives, and vial configuration

NA Williams, T Dean - PDA Journal of Pharmaceutical Science and …, 1991 - journal.pda.org
The thermal characteristics as a function of cooling rate of mannitol solutions were studied by
Differential Scanning Calorimetry (DSC). The exotherm appearing during warming at –25 ± …

Excess free energy approach to the estimation of solubility in mixed solvent systems I: Theory

NA Williams, GL Amidon - Journal of pharmaceutical sciences, 1984 - Wiley Online Library
An approach is developed by which the solubility of an organic compound in mixed solvents
may be estimated. In this approach, an expression for the excess Gibbs free energy of …

Thermal mechanical analysis of frozen solutions of mannitol and some related stereoisomers: evidence of expansion during warming and correlation with vial …

NA Williams, NJ Guglielmc - PDA Journal of Pharmaceutical …, 1993 - journal.pda.org
The mechanical properties of frozen mannitol, L-iditol, dulcitol, and sorbitol solutions were
measured as a function of temperature during warming (after freezing) using a thermal …

Effects of freeze-dry processing conditions on the crystallization of pentamidine isethionate

…, UJ Griesser, AT Bottorff, NA Williams… - Journal of …, 1998 - Elsevier
□ The results of this study show that pentamidine isethionate (PI) can exist in at least four
crystalline forms—three anhydrates designated as forms A, B, and C, and a trihydrate. Form C …

Reduction of pain on intravenous infusion with bile salt formulations for a macrolide antibiotic

JB Cannon, NA Williams, KJ Papp - International journal of pharmaceutics, 1995 - Elsevier
Macrolide antibiotics are well-known to cause pain on intravenous injection. The studies
reported here indicate the feasibility of using bile salts, especially bile salt-phospholipid mixed …

The estimation of solubility in binary solvents: application of the reduced 3-suffix solubility equation to ethanol–water mixtures

NA Williams, GL Amidon - Pharmaceutical Research, 1988 - Springer
The reduced 3-suffix solubility equation (R3SSE) is applied to the characterization of solubility
in the ethanol–water system. The data needed are the solubility of the compound in each …

Low temperature properties of lyophilized solutions and their influence on lyophilization cycle design: Pentamidine isethionate

NA Williams, DL Schwinke - PDA Journal of Pharmaceutical …, 1994 - journal.pda.org
Pentamidine isethionate is a lyophilized antiprotozoal drug. Its solutions, when lyophilized,
have been found to exhibit a range of properties that depend on its concentration and the …

Interactions of small polypeptides with dimyristoylphosphatidylcholine monolayers: effect of size and hydrophobicity

NA Williams, ND Weiner - international Journal of Pharmaceutics, 1989 - Elsevier
The effects of size and hydrophobicity of small (molecular weights below 2,000) polypeptides
on their predominantly hydrophobic interactions with a neutral phospholipid monolayer …

Stability of levofloxacin in intravenous solutions in polyvinyl chloride bags

N Adeyinka Williams, M Bornstein… - American journal of …, 1996 - academic.oup.com
The stability of levofloxacin in 10 commonly used infusion fluids was studied. Levofloxacin
25-mg/mL injection was diluted to 0.5 and 5 mg/mL in each of the following iv infusion fluids: …