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Items: 1 to 20 of 270

2.

Determination of ephedrine-type alkaloids in dietary supplements by LC/MS using a stable-isotope labeled internal standard.

Gay ML, White KD, Obermeyer WR, Betz JM, Musser SM.

J AOAC Int. 2001 May-Jun;84(3):761-9. No abstract available.

PMID:
11417640
4.

Determination of ephedrine alkaloids in dietary supplement standard reference materials.

Sander LC, Sharpless KE, Satterfield MB, Ihara T, Phinney KW, Yen JH, Wise SA, Gay ML, Lam JW, McCooeye M, Gardner G, Fraser C, Sturgeon R, Roman M.

Anal Chem. 2005 May 15;77(10):3101-12.

PMID:
15889898
6.

A rapid and simple procedure for the determination of ephedrine alkaloids in dietary supplements by gas chromatography-mass spectrometry.

Marchei E, Pellegrini M, Pacifici R, Zuccaro P, Pichini S.

J Pharm Biomed Anal. 2006 Aug 28;41(5):1633-41. Epub 2006 Mar 31.

PMID:
16580167
7.

Solid-phase extraction cleanup and liquid chromatography with ultraviolet detection of ephedrine alkaloids in herbal products.

Hurlbut JA, Carr JR, Singleton ER, Faul KC, Madson MR, Storey JM, Thomas TL.

J AOAC Int. 1998 Nov-Dec;81(6):1121-7.

PMID:
9850573
8.

Mass spectrometric determination of the predominant adrenergic protoalkaloids in bitter orange (Citrus aurantium).

Nelson BC, Putzbach K, Sharpless KE, Sander LC.

J Agric Food Chem. 2007 Nov 28;55(24):9769-75. Epub 2007 Oct 30.

PMID:
17966980
9.

A rapid and simple procedure for the determination of synephrine in dietary supplements by gas chromatography-mass spectrometry.

Marchei E, Pichini S, Pacifici R, Pellegrini M, Zuccaro P.

J Pharm Biomed Anal. 2006 Jun 16;41(4):1468-72. Epub 2006 May 15.

PMID:
16698212
10.

Determination of ephedra alkaloid and caffeine concentrations in dietary supplements and biological fluids.

Jacob P 3rd, Haller CA, Duan M, Yu L, Peng M, Benowitz NL.

J Anal Toxicol. 2004 Apr;28(3):152-9.

15.
16.

Quantitative determination of ochratoxin A by liquid chromatography/electrospray tandem mass spectrometry.

Lau BP, Scott PM, Lewis DA, Kanhere SR.

J Mass Spectrom. 2000 Jan;35(1):23-32.

PMID:
10633231
17.

Monitoring phospholipids for assessment of ion enhancement and ion suppression in ESI and APCI LC/MS/MS for chlorpheniramine in human plasma and the importance of multiple source matrix effect evaluations.

Ismaiel OA, Halquist MS, Elmamly MY, Shalaby A, Thomas Karnes H.

J Chromatogr B Analyt Technol Biomed Life Sci. 2008 Nov 15;875(2):333-43. doi: 10.1016/j.jchromb.2008.08.032. Epub 2008 Sep 18.

PMID:
18926779
19.

Quantitative determination of folic acid in multivitamin/multielement tablets using liquid chromatography/tandem mass spectrometry.

Nelson BC, Sharpless KE, Sander LC.

J Chromatogr A. 2006 Dec 1;1135(2):203-11. Epub 2006 Oct 2.

PMID:
17018234
20.

Exactly which synephrine alkaloids does Citrus aurantium (bitter orange) contain?

Allison DB, Cutter G, Poehlman ET, Moore DR, Barnes S.

Int J Obes (Lond). 2005 Apr;29(4):443-6.

PMID:
15700046
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