ε-Caprolactone (CL) monomer (purity 99%), Tin(II) 2-ethylhexanoate (TEH) catalyst (analytical grade), poly(ethylene glycol) (PEG) (average Mn 10,000 g/mol), tetraethyl orthosilicate (TEOS) (reagent grade 98%), triethyl phosphate (TEP) (purum >99.8%), calcium nitrate tetrahydrate Ca(NO3)2·4H2O) (ACS reagent 99%), cetyltrimethylammonium bromide (CTAB) and ethanol were purchased from Sigma-Aldrich chemical company (Saint Louis, MO, USA). Sodium hydrate pellets were supplied from Mallinckrodt Company (Staines-upon-Thames, UK). All the other reagents used were of analytical grade and purchased by Sigma-Aldrich.
Triethyl phosphate tep
Manufactured by Merck Group
Sourced in United States
Triethyl phosphate (TEP) is a clear, colorless, and odorless liquid chemical compound. It is commonly used as a solvent, plasticizer, and flame retardant in various industrial applications.
Automatically generated - may contain errors
Lab products found in correlation
Calcium nitrate tetrahydrate ca no3 2 4h2o, by Merck Group (3 mentions)
Aqueous ammonia, by Samchun (2 mentions)
2 ethoxyethanol, by Merck Group (2 mentions)
Hexadecyltrimethylammonium bromide ctab, by Merck Group (2 mentions)
Ethanol, by Samchun (2 mentions)
Tetraethyl orthosilicate teos, by Merck Group (2 mentions)
Triphenylphosphate tphp, by Merck Group (2 mentions)
Cetyltrimethylammonium bromide ctab, by Merck Group (1 mentions)
Ethanol, by Merck Group (1 mentions)
Zinc oxide, by Merck Group (1 mentions)
Bisphenol a diglycidyl ether badge, by Merck Group (1 mentions)
Calcium chloride, by Merck Group (1 mentions)
Poly methyl methacrylate, by Thermo Fisher Scientific (1 mentions)
Calcium nitrate tetrahydrated ca no3 2 4h2o, by Merck Group (1 mentions)
Cerium 3 nitrate hexahydrate, by Merck Group (1 mentions)
Pluronic p123, by Merck Group (1 mentions)
Hydrochloric acid (hcl), by Merck Group (1 mentions)
Tris edta, by Merck Group (1 mentions)
6 protocols using triethyl phosphate tep
1
Synthesis of Hybrid Silica-Calcium Phosphate Biomaterials
2
Synthesis of Calcium-Silicate-Phosphate Bioceramic Nanoparticles
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MBN were synthesized by modified sol-gel method [2 (link)]. Briefly, in 150 mL of distilled water, 10 mL 2-ethoxyethanol (Sigma-Aldrich, St. Louis, MO, USA), 2 mL aqueous ammonia (Samchun, Seoul, Korea), 1.4 g calcium nitrate tetrahydrate (Ca (NO3) 2.4H2O) (Sigma-Aldrich, St. Louis, MO, USA), 20 mL ethanol (Samchun, Seoul, Korea), and then 1 g hexadecyltrimethylammonium bromide (CTAB, Sigma-Aldrich, St. Louis, MO, USA) were added. After 30 min stirring, 5 mL and 0.25 mL of tetradecyl acetate (TEOS, Sigma-Aldrich, St. Louis, MO, USA), Triethyl phosphate (TEP, Sigma-Aldrich, St. Louis, MO, USA) were added sequentially and stirring for 4 h vigorously. The mole (Mol%) ratio of CaO: SiO2: P2O5 was 36:60:4. The white precipitates were obtained, dried at 60 °C for 24 h, and calcinated at 600 °C for 6 h with a heating rate of 1 °C min−1 and then furnace cooled naturally.
3
Synthesis and Characterization of Phosphate Esters
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All chemicals for the syntheses were purchased from commercial sources and were used without further purification: trimethyl phosphate (TMP) (97%, Sigma-Aldrich, Burlington, MA, USA), triethyl phosphate (TEP) (99%, Sigma-Aldrich), tri-n-propyl phosphate (TnPP) (99%, Sigma-Aldrich), triphenyl phosphate (TPhP) (99%, Merck Schuchardt OHG, Hohenbrunn, Germany), di-n-butyl phosphate (DBP) (97%, Sigma-Aldrich), bis(2-ethylhexyl) phosphate (BEHP) (97%, Sigma-Aldrich), zinc oxide (≥99.0%, Merck KGaA, Darmstadt, Germany), zinc acetate dihydrate (ZnOAc·2H2O) (99%, Merck KGaA), calcium chloride ≥ 97.0%, Sigma-Aldrich), sodium bicarbonate (pure, POCh S.A., Gliwice, Poland), Bisphenol A diglycidyl ether (BADGE) (Brookfield viscosity of 5279 mPa·s at 25 °C, Sigma-Aldrich).
4
Mesoporous Silica-Based Biomaterials
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This study used the following reagents: tetraethylorthosilicate (TEOS) (98%, Sigma-Aldrich, Darmstadt Germany), triethylphosphate (TEP) (99% Sigma-Aldrich, Darmstadt, Germany), calcium nitrate tetrahydrated (Ca(NO3)2·4H2O) (99% Sigma-Aldrich, Darmstadt, Germany) and cerium(III) nitrate hexahydrate (99% Sigma-Aldrich, Darmstadt, Germany) as silica, phosphate-, calcium- and cerium-oxide precursors, respectively, hydrochloric acid (HCl) (Sigma-Aldrich, Darmstadt, Germany) as a catalyst, PEG-PPG-PEG, called Pluronic® P123 (Sigma-Aldrich, Darmstadt, Germany) as structure directing agent and poly methyl methacrylate (Alfa Aesar, Ward Hill, MA, USA).
5
Synthesis of Mesoporous Bioactive Nanoparticles
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MBN was synthesized using a modified sol-gel process. Briefly, 3.12 g calcium nitrate tetrahydrate (Ca(NO3)2·4H2O) (Sigma-Aldrich, St. Louis, MO, USA), 2 mL aqueous ammonia (Samchun, Seoul, Korea), 10 mL 2-ethoxyethanol (Sigma-Aldrich, St. Louis, MO, USA), 20 mL ethanol (Samchun, Seoul, Korea), and 1 g hexadecyltrimethylammonium bromide (CTAB) (Sigma-Aldrich, St. Louis, MO, USA) were mixed in 150 mL distilled water. The mixture was stirred at room temperature for 30 min. Then, 5 mL tetraethyl orthosilicate (TEOS; Sigma-Aldrich, St. Louis, MO, USA) was added and stirred at room temperature for 30 min. Subsequently, 0.25 mL triethyl phosphate (TEP; Sigma-Aldrich, St. Louis, MO, USA) was added and the mixture was vigorously stirred for 4 h at room temperature. A white precipitate was formed and dried in a vacuum oven at 60 °C for 24 h. The dried gel powder was calcined at 600 °C for 5 h. The molar ratio of SiO2:CaO:P2O4 was calculated to be 60:36:4.
6
Binding Assay for Thyroid Hormone Disruption
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Tris-EDTA, non-radiolabelled thyroxine (T4; ≥ 98% purity), and lyophilized transthyretin isolated from human plasma (hTTR; ≥ 95% purity) were obtained from Sigma-Aldrich (Oakville, ON, Canada). The radioligand 125 I-labelled T4 (50 μCi) was obtained from MP Biomedicals (Solon, OH). The polychlorinated biphenyl (PCB) metabolite 4-hydroxy-2,2′,3,4′,5,5′,6-heptachloro-biphenyl (4-OH-CB-187; > 98% purity) was obtained from Wellington Laboratories (Guelph, ON, Canada). The OP esters, tris(butoxyethyl) phosphate (TBOEP; 94% purity), triethyl phosphate (TEP; 99% purity), triphenyl phosphate (TPHP; 99% purity), and diphenyl phosphate (DPHP; 99% purity) were obtained from Sigma-Aldrich (St. Louis, MO). Tris(1,3dichloro-2-propyl) phosphate (TDCIPP; > 95% purity) was obtained from TCI America (Portland, OR), and para-hydroxy triphenyl phosphate (p-OH-TPHP; 98% purity) was generously donated by Dr. Heather Stapleton (Duke University, DC) (Fig. 1).
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