Racemic ketoprofen was isolated from inexpensive, over-the-counter tablets (100 mg PiSA Farmaceutica). (S)-(+)-ketoprofen analytical standard, Cándida rugosa lipase, Cándida antarctica lipase type B, porcine pancreatic Lipase, and Mucor javanicus lipase were obtained from Sigma Aldrich Company (St. Louis, MO, USA). Decan-1-ol, octan-1-ol, butan-1-ol, and methan-1-ol were purchased from Alfa Aesar. Cyclohexane, hexane, hexanes, isopropanol, and isooctane were purchased from Tedia (Ohio, OH, USA). Monobasic potassium phosphate and dibasic potassium phosphate were purchased from Spectrum Chemical Company. All other chemicals and analytical-grade reagents were from commercial sources and used as received.
Cyclohexane
Manufactured by Tedia
Sourced in United States
Cyclohexane is a colorless, flammable cycloalkane with the chemical formula C6H12. It is a commonly used organic solvent and industrial chemical.
Automatically generated - may contain errors
Lab products found in correlation
Hexane, by Tedia (2 mentions)
Isopropanol, by Tedia (2 mentions)
Porcine pancreatic lipase, by Merck Group (1 mentions)
Isooctane, by Tedia (1 mentions)
Mucor javanicus lipase, by Merck Group (1 mentions)
Octan 1 ol, by Thermo Fisher Scientific (1 mentions)
Sep pak c18, by Waters Corporation (1 mentions)
Millex hv filter, by Merck Group (1 mentions)
37 component fame mix, by Merck Group (1 mentions)
Cholesta 3 5 diene, by Merck Group (1 mentions)
Methanol, by Mallinckrodt (1 mentions)
Acetonitrile, by Mallinckrodt (1 mentions)
Acetone, by Tedia (1 mentions)
Dichloromethane, by Tedia (1 mentions)
3 protocols using cyclohexane
1
Enantioselective Enzymatic Resolution of Racemic Ketoprofen
2
Analytical Standards for Lipid Analysis
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The following analytical standards were acquired from Cambridge Isotope Laboratories (5MChr), ChemService (DaiP), Fluka (BjF, DalP, DaeP, DahP), Supelco Inc. (BaA, Chr, BbF, BkF, BaP, DahA, IcdP and 37 component FAME mix) and Sigma (5α-cholestan, cholesta-3,5-diene, campesterol, stigmasterol, β-sitosterol, brassicasterol). High-performance liquid chromatography (HPLC)-grade hexane, cyclohexane, isopropanol and N,N-dimetilformamide were from Tedia, acetonitrile from J.T. Baker, methanol from Mallinckrodt and water was obtained from a Millipore Milli-Q purification system. Millex HV filters (0.45 µm) were purchased from Millipore and solid-phase extraction (SPE) columns were from Waters (Sep Pak C18, 500 mg, 3 mL).
3
Extraction and Quantification of PAHs
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Hexane, cycloHexane, acetone, and dichloromethane (all HPLC-spectro grade) were purchased from Tedia (TC, USA). Internal standard hexamethylbenzene (99% purity) was acquired from Dr•Ehrenstorfer (Augsburg, Germany). The surrogate standard mix was acquired from AccuStandard (CT, USA), and contained naphthalene-d10, acenaphthene-d10, phenanthrene-d10, chrysene-d12 and perylene-d12 (4 mg ml -1 ). A standard solution of 16 US EPA PAHs, and the non-ionic surfactant Brij 30 [CH3(CH2)10CH2(OCH2CH2)nOH, were obtained from Sigma-Aldrich (St. Louis, MO).
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