On page 343, the abstract, the second line,with which octadecylsilyl silica (ODS), was impregnated with was studiedshould readwith which octadecylsilyl silica (ODS) was impregnated, was studied.
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| http://dx.doi.org/10.2116/analsci.32.598 | DOI Listing |
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[A new neolignan glycoside from Acori Tatarinowii Rhizoma].
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August 2024
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The main chemical constituents from Acori Tatarinowii Rhizoma were isolated and purified using the macroporous resin,microporous resin(MCI) and octadecylsilyl silica gel(ODS) column chromatography, as well as semi-preparative high performance liquid chromatography. Their chemical structures were elucidated by spectroscopic analyses including mass spectrometry(MS),nuclear magnetic resonance(NMR), ultraviolet(UV), infrared(IR) and circular dichoism(CD) combined with literature data.A total of 11 compounds were isolated and identified, including 4 lignan glycosides, 2 benzyl alcohol glycosides, 4 flavonoid glycosides, and 1 α-tetralone glycoside:(7S,8R)-dihydrodehydrodiconiferyl alcohol 9-O-β-D-glucopyranosyl-9'-O-β-D-glucopyranosyl-(1 → 6)-β-D-glucopyranoside(1),(7S, 8R)-dihydrodehydrodiconiferyl alcohol 9-O-β-D-glucopyranoside(2),(7S, 8R)-dihydrodehydrodiconiferyl alcohol di-9, 9'-O-β-D-glucopyranoside(3),(+)-lyoniresinol 3α-O-β-D-glucopyranoside(4), benzyl alcohol O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside(5), benzyl alcohol O-β-D-xylopyranosyl-(1→6)-β-D-glucopyranoside(6), 3'-O-methylepicatechin 7-O-β-D-glucopyranoside(7), 3'-O-methylcatechin 7-O-β-D-glucopyranoside(8), apigenin 6-C-β-D-glucopyranosyl-7-O-β-D-glucopyranoside(9), isoscoparin 7-O-β-D-glucopyranoside(10), and(4R)-8-hydroxy-α-tetralone-4-O-β-D-glucopyranoside(11).
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Understanding mass transfer kinetics within individual porous particles is crucial for theoretically explaining the retention and elution behaviors in chromatography and drug delivery. Using laser trapping and fluorescence microspectroscopy, we investigated the diffusion mechanism of coumarin 102 (C102) into single octadecylsilyl particle in acetonitrile (ACN)/water, ,-dimethylformamide (DMF)/water, and 1-butanol (BuOH)/water solutions. The intraparticle diffusion behavior of C102 was evaluated using the spherical diffusion equation, allowing us to determine the intraparticle diffusion coefficients (): (8-10) × 10 cm s for ACN, (10-16) × 10 cm s for DMF, and (4-6) × 10 cm s for BuOH.
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Drug Metabolism and Pharmacokinetics, Drug Safety and Pharmacokinetics Laboratories Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-cho, Kita-ku, Saitama-shi, Saitama 331-9530, Japan.
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