1
|
Cheng J, Zhang L, Lu Q, Lu M, Chen Z, Chen G. pCEC coupling with ESI-MS for the analysis of β2-agonists and narcotics using a poly-(1-hexadecene-co-TMPTMA) monolithic column. Electrophoresis 2010; 31:1991-7. [DOI: 10.1002/elps.201000088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
2
|
Thénot JP, Haegele KD. Analysis of morphine and related analgesics by gas phase methods. METHODS OF BIOCHEMICAL ANALYSIS 2006; 24:1-38. [PMID: 22023 DOI: 10.1002/9780470110447.ch1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
3
|
Pasteur GA. Quantitative determination of stabilizers in tetraethylene glycol dimethacrylate by high-pressure liquid chromatography. Anal Chem 2002. [DOI: 10.1021/ac50011a010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
4
|
Analytical Profile of Papaverine Hydrochloride. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/s0099-5428(08)60223-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
5
|
Analytical Profile of Morphine. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/s0099-5428(08)60222-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
6
|
|
7
|
Rapid analysis of opium alkaloids by ion-pair high performance liquid chromatography. Chromatographia 1984. [DOI: 10.1007/bf02268463] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
8
|
Cone EJ, Gorodetzky CW, Yeh SY, Darwin WD, Buchwald WF. Detection and measurement of opium alkaloids and metabolites in urine of opium eaters by methane chemical ionization mass fragmentography. JOURNAL OF CHROMATOGRAPHY 1982; 230:57-67. [PMID: 7107768 DOI: 10.1016/s0378-4347(00)81430-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A gas chromatographic-mass spectrometric assay for eight opium alkaloids in human urine following opium ingestion is described. The compounds were extracted from urine with methylene chloride-isopropanol (7:3, v/v) at pH 9.5, evaporated, derivatized with Tri-Sil Z and analyzed by methane chemical ionization mass fragmentography. The method in sensitive to ca. 0.01 microgram/ml for morphine and codeine and ca. 0.05 microgram/ml for the other compounds. Adsorption problems on the gas chromatography column prevented obtaining reproducible results for the measurement of noscapine. Extraction efficiencies over the pH range of 8-11 for the eight compounds are reported. Retention times of the opium alkaloids were determined using five different liquid phases (3%) on Gas-Chrom Q (100-120 mesh) and two column lengths (36 cm and 183 cm). The 36-cm column packed with OV-210 was selected for use in the assay. Ions were selected for monitoring for each component from their methane chemical ionization spectrum to provide the needed sensitivity and specificity for analysis of a multi-component mixture. The assay was used for the analysis of an "opium eater's" urine. Morphine, codeine, nomorphine, norcodeine and noscapine were detected; however, no evidence was obtained for thebaine, papaverine or oripavine. Unconjugated morphine (0.64 microgram/ml) was present at nearly twice the concentration of codeine (0.37 microgram/ml) and normorphine and norcodeine were present in equal amounts (ca. 0.15 microgram/ml).
Collapse
|
9
|
|
10
|
Heroin. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/s0099-5428(08)60645-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
|
11
|
Ko CY, Marziani FC, Janicki CA. High-performance liquid chromatographic assay of codeine in acetaminophen with codeine dosage forms. J Pharm Sci 1980; 69:1081-4. [PMID: 7411414 DOI: 10.1002/jps.2600690925] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An accurate, rapid, and specific high-performance liquid chromatographic (HPLC) assay was developed for codeine in acetaminophen with codeine combination products. The internal standard (chlorpheniramine maleate), codeine, acetaminophen, and several other test compounds or impurities were well separated. A complete analysis took < 10 min. The relative standard deviations of the retention time, precision, and accuracy were 0.5, 0.4, and 0.5%, respectively. An excellent linear correlation was obtained between the HPLC and GLC methods.
Collapse
|
12
|
|
13
|
Kubiak EJ, Munson JW. High-performance liquid chromatographic analysis of codeine in syrups using ion-pair formation. J Pharm Sci 1980; 69:152-6. [PMID: 7359314 DOI: 10.1002/jps.2600690209] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The chromatographic behavior of morphine, codeine, and ethylmorphine was examined using reversed-phase high-performance liquid chromatography and ion-pair formation. Alkyl sulfonates and sulfates significantly increased the retention times for these compounds. The carbon chain length of the pairing ions was linearly related to the log of the capacity factors of these amine drugs. A mechanism for the increased retention based on ion-pair formation in the mobile phase is proposed. The use of dioctyl sodium sulfosuccinate as a pairing ion for codeine is described, and a method utilizing this pairing ion was developed for the quantitation of codeine in syrups. This method was applied successfully to various syrups containing codeine or codeine phosphate.
Collapse
|
14
|
Separation of Standard Opiates and Their Analysis in Pharmaceutical and Illicit Preparations by Paired-Ion Reverse-Phase High-Pressure Liquid Chromatography. J Forensic Sci 1979. [DOI: 10.1520/jfs10851j] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
15
|
van der Maeden FP, van Rens PT, Buytenhuys FA, Buurman E. Quantitative analysis of d-tubocurarine chloride in curare by column liquid chromatography. J Chromatogr A 1977; 142:715-23. [PMID: 914944 DOI: 10.1016/s0021-9673(01)92079-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An improved quantitative analysis of d-tubocurarine chloride in the plant extract curare is presented. Gradient high-performance liquid chromatography on a hydrophobic stationary phase was found to be very suitable for the analysis of quaternary ammonium bases such as the complex mixture of curare alkaloids. Owing to the residual free silanol groups on the modified silica surface, the curare alkaloids are eluted from a reversed-phase column only if an electrolyte is added to the mobile phase. In order to optimize the separation, the effects of pH, the nature of the cation in the buffer and the concentration of the buffer of the retention of the alkaloids were investigated. Using a tetramethylammonium phosphate buffer at pH 4 in a gradient of water-methanol, undesirable retardation effects on the reversed-phase column could be suppressed sufficiently. As a result, an accurate method for the determination of d-tubocurarine chloride in curare was obtained. The coefficient of variation of this analysis is only 1.3%.
Collapse
|
16
|
Wu FF, Dobberstein RH. Quantitative determination of thebaine in Papaver bracteatum by high-pressure liquid chromatography. J Chromatogr A 1977; 140:65-70. [PMID: 893633 DOI: 10.1016/s0021-9673(00)83602-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A method is described for the quantitative analysis of thebaine from Papaver bracteatum, using a single high-pressure liquid chromatographic column. The procedure gives base-line separation of thebaine without the need for gradient elution equipment, and can be completed within 12 min. Thebaine isolated by this technique was shown to be pure, regardless of the age of plant or plant part from which it was obtained.
Collapse
|
17
|
Wu CY, Wittick JJ. Separation of five major alkaloids in gum opium and quantitation of morphine, codeine, and thebaine by isocratic reverse phase high performance liquid chromatography. Anal Chem 1977; 49:359-63. [PMID: 842847 DOI: 10.1021/ac50011a009] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
18
|
Abstract
A survey of the literature has been carried out, covering pharmaceutical applications of high-performance liquid chromatography (HPLC) from 1972-1975. The abstracts are divided into seven groups, viz. alkaloids, antibiotics, nitrogen-containing compounds, steroids, sulphur-containing compounds, formulations, and general analytical techniques. A general resume of the development of HPLC in our own laboratory from 1969 onwards is given together with fourteen chromatograms covering the spectrum of our more novel activities in pharmaceutical analysis.
Collapse
|
19
|
Twitchett PJ, Moffat AC. High-pressure liquid chromatography of drugs. An evaluation of an octadecylsilane stationary phase. J Chromatogr A 1975; 111:149-57. [PMID: 239959 DOI: 10.1016/s0021-9673(01)80156-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The performance of a commonly used high-pressure liquid chromatographic stationary phase, octadecylsilane, has been evaluated for 30 compounds selected as representative of a wide variety of drug substances. Chromatographic behavior is found to be highly predictable on the basis of pKa and partition coefficient, and the stationary phase should be especially valuable for the separation of acidic and neutral drugs. For basic drugs, however, the column efficiency is poor, detracting from the overall usefulness.
Collapse
|
20
|
Trinler WA, Reuland DJ. Rapid screening of street drugs by high pressure liquid chromatography: the screening of cocaine, heroin, methadone and morphine by reverse phase HPLC. JOURNAL - FORENSIC SCIENCE SOCIETY 1975; 15:153-8. [PMID: 1159397 DOI: 10.1016/s0015-7368(75)70970-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
21
|
Abstract
Alkaloids are separated by liquid chromatography on resins having functional carboxyl groups combined with copper (II) ions. The eluent is aqueous alcohol containing ammonia. Some resins retain alkaloids much better than others. Alkaloids studied included morphine, codeine, strychnine, atropine, papaverine, narcotine, cocaine, quinine, cinchonine and methadone.
Collapse
|
22
|
Twitchett PJ. Analysis of illicit diamorphine preparations by high-pressure liquid chromatography. J Chromatogr A 1975; 104:205-10. [PMID: 1133133 DOI: 10.1016/s0021-9673(01)85513-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
23
|
Knox JH, Jurand J. Separation of tricyclic psychosedative drugs by high-speed ion-pair partition and liquid-solid adsorption chromatography. J Chromatogr A 1975; 103:310-26. [PMID: 234973 DOI: 10.1016/s0021-9673(00)87223-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The application of high-speed ion-pair partition and liquid-solid adsorption chromatography to the separation of twenty common tricyclic tranquilizers and antidepressant drugs is described. In the ion-pair system, amine-perchlorate ion-pairs were extracted from an aqueous stationary phase supported on 10-mum silica gel by organic eluents containing a chloromethane and a higher aliphatic alcohol, and chromatographic parameters for elution by eight eluent mixtures are presented. Using 5 mm times 120 mm columns good separations, according to chemical class, were achieved. For adsorption chromatography, the components were eluted from 20-mum spherical alumina using eluents containing methylene chloride, n-hexane or n-pentane, and acetic acid. Chromatographic parameters are given for eight eluent compositions. Components differing little in structure are well separated by liquid-solid adsorption chromatography. Compared with ion-pair partition chromatography, adsorption chromatography is much more selective for compounds of the same chemical type. The two methods are therefore complementary. Both methods gave plate heights in the range of 0.1 to 0.3 mm.
Collapse
|
24
|
Williams KW, Smith RC. Recent advances in column chromatography. PROGRESS IN MEDICINAL CHEMISTRY 1975; 12:105-58. [PMID: 781737 DOI: 10.1016/s0079-6468(08)70175-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
25
|
|
26
|
Knox JH, Jurand J. Separation of morphine alkaloids, heroin, methadone and other drugs by ion-exchange chromatography. J Chromatogr A 1973; 82:398-401. [PMID: 4725715 DOI: 10.1016/s0021-9673(01)91851-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|