Trans-stilbene, 7 - ethoxycoumarin, β - glucuronidase from Escherichia coli type IX-A, β -glucuronidase from Helix pomatia type HP-2, and halothane were purchased from Sigma Aldrich (USA). Racemic liquiritigenin was purchased from Extrasynthese (France). HPLC grade acetonitrile and water were purchased from J. T. Baker (USA). Phosphoric acid was purchased from Aldrich Chemical Co. Inc. (USA). Silastic® laboratory tubing was purchased from Dow Corning Corporation (USA). Intramedic® polyethylene tubing was purchased from Becton Dickinson Primary Care Diagnostics, Becton Dickinson and Company (USA). Monoject® 23 gauge (0.6 mm × 25 mm) polypropylene hub hypodermic needles were purchased from Sherwood Medical (USA). Synthetic absorbable surgical sutures were purchased from Wilburn Medical US (USA). Rats were obtained from Simonsen Labs (USA). Ethics approval for animal experiments was obtained from University of Manitoba.
Trans stilbene
Manufactured by Merck Group
Sourced in United States
Trans-stilbene is a chemical compound used as a reference material in various analytical and research applications. It serves as a standard for the identification and quantification of other compounds in samples through techniques such as spectroscopy and chromatography. The core function of trans-stilbene is to provide a consistent and reliable reference point for these analytical methods.
Automatically generated - may contain errors
Lab products found in correlation
β glucuronidase from helix pomatia type hp 2, by Merck Group (2 mentions)
β glucuronidase from escherichia coli type 9 a, by Merck Group (2 mentions)
7 ethoxycoumarin, by Merck Group (2 mentions)
Cis stilbene, by Merck Group (2 mentions)
Halothane, by Merck Group (1 mentions)
Pinostilbene, by Merck Group (1 mentions)
Piceatannol, by Merck Group (1 mentions)
Pinosylvin monomethyl ether, by Merck Group (1 mentions)
Pterostilbene, by Merck Group (1 mentions)
Isorhapontigenin, by Merck Group (1 mentions)
Trans resveratrol, by Merck Group (1 mentions)
Acetonitrile, by Merck Group (1 mentions)
Triethylamine, by Merck Group (1 mentions)
Tetrabutylammonium hexafluorophosphate, by Merck Group (1 mentions)
Hydroquinone, by Merck Group (1 mentions)
Hydroxypropyl cellulose, by Merck Group (1 mentions)
Agilent 1290 infinity 2 uhplc system, by Agilent Technologies (1 mentions)
Acquity uplc beh c18 column, by Agilent Technologies (1 mentions)
Direct q ultra pure water system, by Merck Group (1 mentions)
Sodium salt of carboxymethylcellulose cmc, by Merck Group (1 mentions)
9 protocols using trans stilbene
1
Coumarin Glucuronidation Kinetics Assay
2
Isolation and Characterization of Stilbenoids
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The stilbenoid derivatives to be tested (1–19 , Table 1 ) were isolated from natural sources or obtained commercially. The naturally occurring stilbenoids trans-resveratrol (1 ), pinostilbene (2 ), thunalbene (3 ), piceatannol (4 ), piceatannol-3’-O-β-glucopyranoside (5 ), batatasin III (6 ), pinostilbenoside (7 ), 1-(2,4-dihydroxyphenyl)-2-(4-hydroxyfenyl)-ethanone (10 ), 3,5-dimethoxystilbene (11 ), pterostilbene (15 ), pinosylvin monomethyl ether (17 ), and isorhapontigenin (18 ) were obtained from Sigma-Aldrich, synthetic compounds trans-stilbene (12 ), cis–stilbene (13 ), 4-stilbenecarboxylic acid (14 ), trans-α-methylstilbene (16 ), and 2,4,3´,5´-tetramethoxystilbene (19 ) were purchased from Sigma-Aldrich (Steinheim, Germany). The compounds 2-carboxyl-3-O-methyl-4´-β-d -glucopyranosyl-dihydroresveratrol (8 ) and 3-O-caffeoyl-(9→5)-β-apiosyl-(1→6)-β-glucopyranosyl-5,3´-O-dimethyldihydropiceatannol (9 ) were kindly provided by Dr. Sebastian Granica (Medical University of Warsaw, Warsaw, Poland) who had isolated them from Tragopogon tommasinii Sch.Bip. (Asteraceae, Cichorieae) [7 (link)].
3
Electrochemical Studies of Conjugated Polymers
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Materials: Chemicals were used without any further treatment unless mentioned otherwise. The following compounds were purchased from Sigma Aldrich (Oakville, ON, Canada): hydroxypropyl cellulose (powder, 20 mesh particle size, MW ~100,000); tetrabutylammonium hexafluorophosphate (TBAPF6; for electrochemical analysis, ≥99.0%); hydroquinone (ReagentPlus, ≥99.5%); triethylamine, distilled (≥99.0%); acetonitrile, distilled (for HPLC, gradient grade, ≥99.9%); dichloromethane, distilled (DCM; ACS reagent, ≥99.5%); carbazole (≥95%); NaH (60% dispersion in mineral oil); NaCl and NaClO4 (ACS reagent, ≥98.0%); calcium hydride (reagent grade, 95%); and trans-stilbene (96%). ITO nanoparticles were purchased from Fisher Scientific (17–28 nm APS powder). Anhydrous ethanol was purchased from Greenfield Global (Chatham, ON, Canada). Tetrafluoroisophthalonitrile (>98.0%) was purchased from TCI chemicals (Portland, OR, USA). The solvents tetrahydrofuran (Na/benzophenone), toluene (CaH2), DCM (CaH2), and acetonitrile (CaH2) were dried by distillation from the appropriate drying agent under N2. Triple-distilled water was used for all glassware cleaning and preparation of aqueous solutions for electrochemistry experiments.
4
Quantitative HPLC Analysis of Resveratrol
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The LC separation was performed using hydrophilic interaction chromatography with an Acquity UPLC BEH C18 column (2.1 × 50 mm, 1.7 µm, Agilent Technologies) operated by Agilent 1290 Infinity II UHPLC system (Agilent, Santa Clara, USA). The mobile phase consisted of A (water containing 0.1% formic acid) and B (acetonitrile containing 0.1% formic acid) and was run in gradient elution i.e., 0–4 min, 90% B; 4–11 min, 90% B and 9–15 min, 10% B. The flow rate and injection volumes were 0.25 ml/min and 2 µl, respectively. Elution was monitored at 280 nm by using a PDA detector and column temperature was maintained at 30 ®C. Detection of resveratrol and trans-stilbene was performed by spectral matches with standards of resveratrol and trans-stilbene (Sigma-Aldrich) prepared in methanol (1.0 mg/ ml; w/v).
5
Tangeretin Solubilization Formulation Development
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Tangeretin (4′,5,6,7,8-pentamethoxyflavone; purity > 98%, TAN, 1, Figure 1 a) was purchased from Ontario Chemicals Inc. (Guelph, ON, Canada). Trans-stilbene (purity > 96%, internal standard, Figure 1 b) was purchased from Sigma-Aldrich. 2-Hydroxypropyl-β-cyclodextrin (HP-β-CD, degree of substitution about 0.6) and randomly methylated-β-cyclodextrin (RM-β-CD) were generously donated by Wacker (Burghausen, Germany). Sodium salt of carboxymethylcellulose (CMC) was purchased from Sigma-Aldrich (St. Louis, MO, USA). HPLC/Spectro-grade acetonitrile was purchased from Tedia (Fairfield, OH, USA). Analytical grade dimethyl sulfoxide (DMSO) was purchased from MP Biomedicals (Solon, OH, USA). Purified water (18.2 MΩ·cm at 25 °C) was generated by a Millipore Direct-Q ultrapure water system (Billerica, MA, USA) and used to prepare dosing solution as well as mobile phase throughout the study.
6
Oxyresveratrol-Mediated DNA Supercoiling
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Oxyresveratrol (>97%), resveratrol, trans-stilbene, and copper acetate (Cu(OAc)2) (99.99%) were purchased from Sigma-Aldrich (Buchs, Switzerland); pBR322 Supercoiled plasmid DNA was purchased from Thermo Fisher Scientific (Vilnius, Lithunia); deionized water (<18 MΩ cm resistivity) was obtained from the Milli-Q Element water purification system Millipore S.A.S. (Molcheim, France).
7
Synthesis of Phenanthridine Derivatives
8
Pharmacokinetics of Pinocembrin and Pinostrobin
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Trans-stilbene, 7-ethoxycoumarin, β-glucuronidase from Escherichia coli type IX-A, β -glucuronidase from Helix pomatia type HP-2, and halothane were purchased from Sigma (St. Louis, MO, USA). Racemic pinocembrin (50:50, S:R) was purchased from Extrasynthese (France). Racemic pinostrobin (50:50, S:R) was purchased from Indofine Chemical Company (Hillsborough, NJ, USA). HPLC grade acetonitrile and water were purchased from J. T. Baker (Phillipsburg, NJ, USA). Phosphoric acid was purchased from Aldrich Chemical Co. Inc. (Milwaukee, WI, USA). Silastic laboratory tubing was purchased from Dow Corning Corporation, (Midland, MI, USA). Intramedic polyethylene tubing was purchased from Becton Dickinson Primary Care Diagnostics, Becton Dickinson and Company (Sparks, MD, USA). Monoject 23 gauge (0.6 mm 25 mm) polypropylene hub hypodermic needles were purchased from Sherwood Medical (St. Louis, MO, USA). Synthetic absorbable surgical sutures were purchased from Wilburn Medical US (Kernesville, NC, USA). Rats were obtained from Simonsen Labs (Gilroy, CA, USA). Ethics approval for animal experiments was obtained from University of Manitoba.
9
Synthesis of Silica Monoliths
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As the silica source, tetramethoxysilane (TMOS) was purchased from Shin-Etsu Chemical Co. Ltd. (Japan).
Poly(ethylene oxide) (PEO, Mw = 10000) as the phase separation inducer for the preparation of monolithic silica, (3-aminopropyl)triethoxysilane (APTES), silver nitrate, naphthalene, anthracene, phenanthrene, cis-stilbene and trans-stilbene were obtained from Sigma-Aldrich Co. LLC (USA). Urea and distilled water were purchased from Hayashi Pure Chemical Ind., Ltd. (Japan) and Wako Pure Chemical Ltd. (Japan), respectively. All the other chemicals were from Kishida Chemical Co., Ltd. (Japan). All the chemicals were of analytical grade and used without further purification.
Poly(ethylene oxide) (PEO, Mw = 10000) as the phase separation inducer for the preparation of monolithic silica, (3-aminopropyl)triethoxysilane (APTES), silver nitrate, naphthalene, anthracene, phenanthrene, cis-stilbene and trans-stilbene were obtained from Sigma-Aldrich Co. LLC (USA). Urea and distilled water were purchased from Hayashi Pure Chemical Ind., Ltd. (Japan) and Wako Pure Chemical Ltd. (Japan), respectively. All the other chemicals were from Kishida Chemical Co., Ltd. (Japan). All the chemicals were of analytical grade and used without further purification.
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