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Caffeine and sodium benzoate (CSB), the central nervous system (CNS) stimulant, which is sometimes illegally used with amphetamines to obtain sexual arousal was used in this study. According to comparison of terahertz spectra obtained from three CSB distributed as Japanese Pharmacopoeia (JP) active pharmaceutical ingredients (APIs), difference of one terahertz spectrum of three manufacturers was observed...
Effect on viscosity of cellulose derivatives against pseudo-polymorphism conversion from an amorphous theophylline to theophylline anhydride form during a pharmaceutical manufacturing process was investigated using a terahertz spectroscopy. In order to investigate an effect on viscosity of binders against pseudo-polymorphism conversion of an amorphous theophylline, cellulose derivatives were used...
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