189278

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Tetrahedron, 47, 2263-2263 (1991)

Feasibility of ultra-performance liquid chromatography-ion mobility-time-of-flight mass spectrometry in analyzing oxysterols.

Petri Kylli et al.

Journal of chromatography. A, 1487, 147-152 (2017-01-26)

Oxysterols are oxygenated cholesterols that are important in many cell functions and they may also be indicative of certain diseases. The purpose of this work was to study the feasibility of ultra-performance liquid chromatography-ion mobility-time-of-flight mass spectrometry (UPLC-IM-TOFMS) using traveling

Pyrrolizidine alkaloids in herbal teas for infants, pregnant or lactating women.

Inga Mädge et al.

Food chemistry, 187, 491-498 (2015-05-16)

A general contamination of tea with pyrrolizidine alkaloids (PA) has just become known. Here, we report the application and modification of a new HPLC-ESI-MS/MS sum parameter method to quantitate PA content of herbal teas intended for infants, pregnant and lactating

Tetrahedron Letters, 34, 1867-1867 (1993)

Determination of 3-α-hydroxytibolone in human plasma by LC-MS/MS: application for a pharmacokinetic study after administration of a tibolone formulation.

Fabiana Fernandes de Santana e Silva Cardoso et al.

Biomedical chromatography : BMC, 27(11), 1457-1462 (2013-07-03)

A new method was developed for the quantitation of 3-α-hydroxy tibolone, in human plasma, after oral administration of a tablet formulation containing tibolone (2.5 mg). 3-α-Hydroxy tibolone was extracted by a liquid-liquid procedure, using cyproterone acetate as internal standard and chlorobutane

The Grafting of Multifunctional Antithrombogenic Chemical Networks on Polyurethane Intravascular Catheters.

Yael Roth et al.

Polymers, 12(5) (2020-05-21)

Intravascular catheters (IVCs) and other medical tubing are commonly made of polymeric materials such as polyurethane (PU). Polymers tend to be fouled by surface absorption of proteins and platelets, often resulting in the development of bacterial infections and thrombosis during

Palladium-catalyzed tandem bis-allylation of isocyanates.

N Solin et al.

Organic letters, 3(6), 909-912 (2001-03-27)

A tandem bis-allylation of p-toluenesulfonyl isocyanate can be achieved by palladium-catalyzed three-component coupling reaction with allylstannanes and allyl chlorides. A high level of regioselectivity can be obtained by the appropriate choice of the allylic substituents. The reaction mechanism and the

The Journal of Organic Chemistry, 58, 7022-7022 (1993)

Simultaneous determination of diethylene glycol and propylene glycol in pharmaceutical products by HPLC after precolumn derivatization with p-toluenesulfonyl isocyanate.

Tao Zhou et al.

Journal of separation science, 30(16), 2620-2627 (2007-09-21)

A simple and reliable HPLC method was developed for the simultaneous quantitative analysis of diethylene glycol (DEG) and propylene glycol (PG) in pharmaceutical products by precolumn derivatization. The derivatization reagent p-toluenesulfonyl isocyanate (TSIC, 10 microL, 20% in ACN v/v) was

Tetrahedron Letters, 34, 951-951 (1993)

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