Zobrazeno 1 - 10
of 49
pro vyhledávání: '"B. Herényi"'
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 10:831-835
Two HPLC systems have been developed for the investigation of flumecinol (3-trifluoromethyl-alpha-ethyl-benzhydrol). The reversed-phase system (LiChrosorb RP-18; methanol-water, 7:3, v/v) enables the isolation and identification of the impurities. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::522bfaf7f99193c13ea1a9b9b31057f9
https://doi.org/10.1016/0731-7085(91)80088-q
https://doi.org/10.1016/0731-7085(91)80088-q
Publikováno v:
Pharmaceutical research. 12(2)
We report on a new isomeric impurity of danazol. This impurity designated as isodanazol was detected by reversed-phase high-performance liquid chromatography (HPLC) and thin-layer chromatography (TLC). Its structure was determined after separation by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7a4c8566b54e7331864564ae4a1206f7
https://pubmed.ncbi.nlm.nih.gov/7784348
https://pubmed.ncbi.nlm.nih.gov/7784348
Publikováno v:
Acta pharmaceutica Hungarica. 61(2)
In the course of the estimation of the impurity profile of ethynodiol diacetate, in addition to common impurities such as norethisterone acetate, ethynodiol-3-acetate and alpha-ethynodiol diacetate, two unknown impurities were detected by analytical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::55d959fe66250e0cce3480d286af3622
https://pubmed.ncbi.nlm.nih.gov/1887802
https://pubmed.ncbi.nlm.nih.gov/1887802
Publikováno v:
Acta pharmaceutica Hungarica. 61(2)
The therapeutically very important 17 alpha-ethynyl steroids are prepared from 17-keto steroids by means of addition of acetylene. Two important side reactions of this procedure are known: the formation of the isomeric beta-ethynyl derivative and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5090091b8b702a694c352b838eee3bcd
https://pubmed.ncbi.nlm.nih.gov/1887805
https://pubmed.ncbi.nlm.nih.gov/1887805
Publikováno v:
Chromatographia. 29:395-396
In the course of the estimation of the impurity profile of the immunostimulant peptide RGH-0205 (Arg-Lys-Asp) its main impurity was found to be Arg-Lys-DAsp. In order to optimize its separation and quantitative determination and to check the possibil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e05720485cf964a29f656b87e65c871
https://doi.org/10.1007/bf02261309
https://doi.org/10.1007/bf02261309
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Publikováno v:
Journal of Chromatography A. 452:317-321
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::993b3edcbbf19ba148f9f9e92656569b
https://doi.org/10.1016/s0021-9673(01)81456-4
https://doi.org/10.1016/s0021-9673(01)81456-4
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 7:1527-1533
New applications in the identification of minor components in drugs by rapid scanning diode-array UV spectrophotometers as high-performance liquid chromatographic (HPLC) detectors are exemplified by (a) identification and quantification of alpha-chlo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63dcc806efb74c093f7b859a6aa8c4ad
https://doi.org/10.1016/0731-7085(89)80161-x
https://doi.org/10.1016/0731-7085(89)80161-x
Publikováno v:
Journal of Chromatography A. 152:240-242
High-performance liquid chromatography (HPLC) diode-array UV-spectrophotometric detection is used for estimating impurity profiles of steroid drugs. It is shown to be a very useful first screening method for the identification of UV-active impurities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::476959e8dd0cc8fd4f9fd2e17f15c437
https://doi.org/10.1016/s0021-9673(00)85358-3
https://doi.org/10.1016/s0021-9673(00)85358-3
Publikováno v:
Acta pharmaceutica Hungarica. 57(1-2)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::91b14003c69a9f7704d2cb0c55adc4ba
https://pubmed.ncbi.nlm.nih.gov/3591342
https://pubmed.ncbi.nlm.nih.gov/3591342