Frauendorf, Holm

[["dc.bibliographiccitation.firstpage","5211"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","The Journal of Organic Chemistry"],["dc.bibliographiccitation.lastpage","5215"],["dc.bibliographiccitation.volume","75"],["dc.contributor.author","Khlebnikov, Alexander F."],["dc.contributor.author","Novikov, Mikhail S."],["dc.contributor.author","Petrovskii, Petr P."],["dc.contributor.author","Konev, Alexander S."],["dc.contributor.author","Yufit, Dmitry S."],["dc.contributor.author","Selivanov, Stanislav I."],["dc.contributor.author","Frauendorf, Holm"],["dc.date.accessioned","2018-11-07T08:40:27Z"],["dc.date.available","2018-11-07T08:40:27Z"],["dc.date.issued","2010"],["dc.description.abstract","Cycloaddition of dibenzoxazepinium ylides to acetylene carboxylates leads to cis-3-aryl-3,13b-dihydrodibenzo[b,f]pyrrolo[1,2-d][1,4]oxazepinecarboxylates, which smoothly dehydrogenate to the corresponding pyrrole derivatives. The o-bromophenyl-substituted pyrrole, in contrast to the pyrroline analogue, demonstrates atropoisomerism. Stereoselective cycloaddition of dibenzoxazepinium ylides to fullerene C-60 gives rise to fulleropyrrolidines with cis-configuration. Restricted Ph group rotation is found in the phenyl derivative. Only one of two possible atropoisomers is formed in the reaction of o-bromophenyl-substituted ylide with fullerene C-60. Details of cycloaddition and conformational behavior of cycloadducts were studied by DFT computations."],["dc.identifier.doi","10.1021/jo100966j"],["dc.identifier.isi","000280398100035"],["dc.identifier.pmid","20604511"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19236"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation.issn","0022-3263"],["dc.title","Stereoselective Cycloaddition of Dibenzoxazepinium Ylides to Acetylenes and Fullerene C-60. Conformational Behavior of 3-Aryldibenzo[b,f]pyrrolo[1,2-d][1,4]oxazepine Systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5590"],["dc.bibliographiccitation.issue","19"],["dc.bibliographiccitation.journal","Polymer"],["dc.bibliographiccitation.lastpage","5598"],["dc.bibliographiccitation.volume","48"],["dc.contributor.author","Buback, Michael"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","GUnzler, Fabian"],["dc.contributor.author","Vana, Philipp"],["dc.date.accessioned","2018-11-07T10:58:38Z"],["dc.date.available","2018-11-07T10:58:38Z"],["dc.date.issued","2007"],["dc.description.abstract","The type and number of end groups of poly(methyl methacrylates) from free-radical polymerization with six diacyl peroxides, R-(CO)O- O(CO)-R. acting as initiators have been analyzed via electrospray ionization mass spectrometry using an ion trap and additionally Fourier transform ion cyclotron resonance for mass detection. The polymerizations were carried out in benzene solution at high initiator concentration to yield low molecular weight polymer. With R being an alkyl group, only R moieties are observed as end groups. For each oligomer size, molecules with one or two such end groups are formed, depending on whether termination occurs via disproportionation or combination. With R being an aryl type, as in di-benzoyl and di-naphthoyl peroxides, both R and R-(CO)O moieties are detected as polymeric end groups. Because of aromatic delocalization. fractions of the arylic R-(CO)O-center dot radicals are sufficiently long living at 95 degrees C to add to a monomer molecule prior to undergo decarboxylation. (C) 2007 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.polymer.2007.07.041"],["dc.identifier.isi","000250161000018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50507"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0032-3861"],["dc.title","Electrospray ionization mass spectrometric end-group analysis of PMMA produced by radical polymerization using diacyl peroxide initiators"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","796"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","ChemCatChem"],["dc.bibliographiccitation.lastpage","805"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","Saha, Tapan Kumar"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","John, Michael"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Meyer, Franc"],["dc.date.accessioned","2018-11-07T09:27:35Z"],["dc.date.available","2018-11-07T09:27:35Z"],["dc.date.issued","2013"],["dc.description.abstract","Dyes in wastewater severely affect the nature and quality of water by inhibiting the sunlight penetration into the stream, which thereby reduces the photosynthesis reaction. This poses a serious environmental threat in many developing countries. Recently, new methods for the treatment of colored dye effluent streams have attracted much attention. The [MnIII(tmpyp)]/H2O2 system (tmpyp=meso-tetrakis(1-methylpyridinium-4-yl)porphyrinato) was now found to degrade various azo dyes with remarkably high efficiency under ambient conditions in aqueous solution at certain pH values. Main products of the catalytic degradation of the dye amaranth by [MnIII(tmpyp)]/H2O2 were analyzed. The reaction mechanism was studied in more detail by using rapid-scan stopped-flow spectrophotometry as a function of pH, [catalyst], [H2O2], [dye], and [surfactants]. Spectral analyses and kinetic data suggested rapid formation of an intermediate [MnIII(tmpyp)(OOH)] (a compound 0-type intermediate), followed by the formation of a relatively stable trans-dioxomanganese(V) porphyrin complex, [MnV(O)2(tmpyp)] (a compoundI analog). The one-electron reduction of [MnV(O)2(tmpyp)] to [MnIV(O)(tmpyp)] (a compoundII analog) was accelerated greatly by amaranth. On the basis of the kinetic and spectroscopic data, a reaction mechanism of the formation of reactive intermediates [MnIII(tmpyp)(OOH)], [MnV(O)2(tmpyp)], and [MnIV(O)(tmpyp)] was proposed."],["dc.description.sponsorship","Alexander von Humboldt Foundation"],["dc.identifier.doi","10.1002/cctc.201200475"],["dc.identifier.isi","000315416200026"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30572"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1867-3880"],["dc.title","Efficient Oxidative Degradation of Azo Dyes by a Water-Soluble Manganese Porphyrin Catalyst"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","134"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Toxins"],["dc.bibliographiccitation.lastpage","150"],["dc.bibliographiccitation.volume","1"],["dc.contributor.author","Tietze, Lutz Friedjan"],["dc.contributor.author","Krewer, Birgit"],["dc.contributor.author","von Hof, J. Marian"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Schuberth, Ingrid"],["dc.date.accessioned","2018-11-07T11:21:49Z"],["dc.date.available","2018-11-07T11:21:49Z"],["dc.date.issued","2009"],["dc.description.abstract","The natural antibiotics CC-1065 and the duocarmycins are highly cytotoxic compounds which however are not suitable for cancer therapy due to their general toxicity. We have developed glycosidic prodrugs of seco-analogues of these antibiotics for a selective cancer therapy using conjugates of glycohydrolases and tumour-selective monoclonal antibodies for the liberation of the drugs from the prodrugs predominantly at the tumour site. For the determination of structure activity relationships of the different seco-drugs, experiments addressing their interaction with synthetic DNA were performed. Using electrospray mass spectrometry and high performance liquid chromatography, the experiments revealed a correlation of the stability of these drugs with their cytotoxicity in cell culture investigations. Furthermore, it was shown that the drugs bind to AT-rich regions of double-stranded DNA and the more cytotoxic drugs induce DNA fragmentation at room temperature in several of the selected DNA double-strands. Finally, an explanation for the very high cytotoxicity of CC-1065, the duocarmycins and analogous drugs is given."],["dc.identifier.doi","10.3390/toxins1020134"],["dc.identifier.isi","000208434400006"],["dc.identifier.pmid","22069536"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8258"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55867"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mdpi Ag"],["dc.relation.issn","2072-6651"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Determination of the Biological Activity and Structure Activity Relationships of Drugs Based on the Highly Cytotoxic Duocarmycins and CC-1065"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1139"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Analytical and Bioanalytical Chemistry"],["dc.bibliographiccitation.lastpage","1147"],["dc.bibliographiccitation.volume","390"],["dc.contributor.author","Fitzner, Ansgar"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Laatsch, Hartmut"],["dc.contributor.author","Diederichsen, Ulf"],["dc.date.accessioned","2018-11-07T11:18:24Z"],["dc.date.available","2018-11-07T11:18:24Z"],["dc.date.issued","2008"],["dc.description.abstract","Formation and fragmentation of recognition complexes between trioxacarcin A and various DNA sequences were examined by temperature-dependent UV and CD spectroscopy, HPLC analysis, and ESI mass spectrometry with regard to reaction conditions, intermediates, products, mechanism, and sequence specificity. Cleavage of the trioxacarcin-DNA complexes provided the natural product gutingimycin by guanine abstraction. The resulting DNA with an abasic site was further cleaved into a DNA fragment with a furanyl unit at the 3'-end and an oligonucleotide with a phosphorylated 5'-end."],["dc.identifier.doi","10.1007/s00216-007-1737-6"],["dc.identifier.isi","000252918100017"],["dc.identifier.pmid","18210096"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3482"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55029"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","1618-2642"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Formation of gutingimycin: analytical investigation of trioxacarcin A-mediated alkylation of dsDNA"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","11631"],["dc.bibliographiccitation.issue","33"],["dc.bibliographiccitation.journal","Chemistry - A European Journal"],["dc.bibliographiccitation.lastpage","11642"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Nizamov, Shamil"],["dc.contributor.author","Sednev, Maksim V."],["dc.contributor.author","Bossi, Mariano L."],["dc.contributor.author","Hebisch, Elke"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Lehnart, Stephan E."],["dc.contributor.author","Belov, Vladimir N."],["dc.contributor.author","Hell, Stefan W."],["dc.date.accessioned","2017-09-07T11:44:44Z"],["dc.date.available","2017-09-07T11:44:44Z"],["dc.date.issued","2016"],["dc.description.abstract","Large Stokes-shift coumarin dyes with an O-phosphorylated 4-(hydroxymethyl)-2,2-dimethyl-1,2,3,4-tetrahydroquinoline fragment emitting in the blue, green, and red regions of the visible spectrum were synthesized. For this purpose, N-substituted and O-protected 1,2-dihydro-7-hydroxy- 2,2,4-trimethylquinoline was oxidized with SeO2 to the corresponding a, alpha,beta-unsaturated aldehyde and then reduced with NaBH4 in a \"one-pot\" fashion to yield N-substituted and 7-O-protected 4-(hydroxymethyl)-7-hydroxy-2,2-dimethyl-1,2,3,4-tetrahydroquinoline as a common precursor to all the coumarin dyes reported here. The photophysical properties of the new dyes (\"reduced coumarins\") and 1,2-dihydroqui-noline analogues (formal precursors) with a trisubstituted C=C bond were compared. The \"reduced coumarins\" were found to be more photoresistant and brighter than their 1,2-dihydroquinoline counterparts. Free carboxylate analogues, as well as their antibody conjugates (obtained from N-hydroxysuccinimidyl esters) were also prepared. All studied conjugates with secondary antibodies afforded high specificity and were suitable for fluorescence microscopy. The red-emitting coumarin dye bearing a betaine fragment at the C-3-position showed excellent performance in stimulation emission depletion (STED) microscopy."],["dc.identifier.doi","10.1002/chem.201601252"],["dc.identifier.gro","3141636"],["dc.identifier.isi","000382921600024"],["dc.identifier.pmid","27385071"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/3789"],["dc.identifier.url","https://sfb1002.med.uni-goettingen.de/production/literature/publications/148"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10 / Funder: Deutsche Forschungsgemeinschaft [SFB 1002]"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation","SFB 1002: Modulatorische Einheiten bei Herzinsuffizienz"],["dc.relation","SFB 1002 | A05: Molekulares Imaging von kardialen Calcium-Freisetzungsdomänen"],["dc.relation","SFB 1002 | C02: RhoGTPasen und ihre Bedeutung für die Last-abhängige Myokardfibrose"],["dc.relation.issn","0947-6539"],["dc.relation.issn","1521-3765"],["dc.relation.workinggroup","RG Hell"],["dc.relation.workinggroup","RG Lehnart (Cellular Biophysics and Translational Cardiology Section)"],["dc.title","\"Reduced\" Coumarin Dyes with an O-Phosphorylated 2,2-Dimethyl-4-( hydroxymethyl)-1,2,3,4-tetrahydroquinoline Fragment: Synthesis, Spectra, and STED Microscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6570"],["dc.bibliographiccitation.issue","39"],["dc.bibliographiccitation.journal","Angewandte Chemie International Edition"],["dc.bibliographiccitation.lastpage","6574"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Tietze, Lutz Friedjan"],["dc.contributor.author","Krewer, Birgit"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Major, Felix"],["dc.contributor.author","Schuberth, Ingrid"],["dc.date.accessioned","2018-11-07T10:29:12Z"],["dc.date.available","2018-11-07T10:29:12Z"],["dc.date.issued","2006"],["dc.identifier.doi","10.1002/anie.200600935"],["dc.identifier.isi","000241314100037"],["dc.identifier.pmid","16960904"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43590"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1433-7851"],["dc.title","Investigation of reactivity and selectivity of DNA-alkylating duocarmycin analogues by high-resolution mass spectrometry"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","58"],["dc.bibliographiccitation.journal","Chemical Communications"],["dc.bibliographiccitation.volume","51"],["dc.contributor.author","Hörner, Sebastian"],["dc.contributor.author","Uth, Christina"],["dc.contributor.author","Avrutina, Olga"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Wiessler, M."],["dc.contributor.author","Kolmar, Harald"],["dc.date.accessioned","2018-11-07T10:03:08Z"],["dc.date.available","2018-11-07T10:03:08Z"],["dc.date.issued","2015"],["dc.identifier.doi","10.1039/c5cc90302e"],["dc.identifier.isi","000357618200047"],["dc.identifier.pmid","26123240"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38389"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.eissn","1359-7345"],["dc.relation.issn","1364-548X"],["dc.title","Combination of inverse electron-demand Diels-Alder reaction with highly efficient oxime ligation expands the toolbox of site-selective peptide conjugations (vol 51, pg 11130, 2015)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","437"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Analytical and Bioanalytical Chemistry"],["dc.bibliographiccitation.lastpage","448"],["dc.bibliographiccitation.volume","395"],["dc.contributor.author","Tietze, Lutz Friedjan"],["dc.contributor.author","Krewer, Birgit"],["dc.contributor.author","Frauendorf, Holm"],["dc.date.accessioned","2018-11-07T11:24:30Z"],["dc.date.available","2018-11-07T11:24:30Z"],["dc.date.issued","2009"],["dc.description.abstract","One of the main problems of anti-cancer therapy is an insufficient differentiation between normal and malignant cells by the known anti-proliferant agents. The antibody-directed enzyme prodrug therapy is a promising approach for a selective treatment of cancer, in which a non-toxic prodrug is enzymatically converted into a highly cytotoxic drug at the surface of malignant cells by a targeted antibody-enzyme conjugate. The transformations and the stability of a very promising novel prodrug and its corresponding cytotoxic derivative were now investigated in detail by high-performance liquid chromatography (HPLC)-mass spectrometry (MS). In order to determine the time-dependent DNA alkylation efficiency and the sequence selectivity of the novel compounds, DNA binding studies using direct electrospray-Fourier transform ion cyclotron resonance-MS (ESI-FTICR-MS) have been performed. These measurements were accompanied by HPLC analyses followed by MS of the separated species to confirm the results of the direct ESI-FTICR-MS measurements. The sites of DNA alkylation could be identified unambiguously by the mass spectrometric fragmentation pattern of the alkylated oligodeoxynucleotides as well as by the results of HPLC followed by MS. A combination of all techniques applied led to a better understanding of the mode of action of the new therapeutics and might be used for an estimation of the cytotoxicity of different prodrugs and drugs since the alkylation efficiency correlates with the bioactivity of the compounds in cell culture investigations."],["dc.identifier.doi","10.1007/s00216-009-2963-x"],["dc.identifier.isi","000269006500020"],["dc.identifier.pmid","19641906"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3483"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56421"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.conference","27th International Symposium on Chromatography"],["dc.relation.eventlocation","Munster, GERMANY"],["dc.relation.issn","1618-2642"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Investigation of the transformations of a novel anti-cancer agent combining HPLC, HPLC-MS and direct ESI-HRMS analyses"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0223552"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Affenzeller, Susanne"],["dc.contributor.author","Frauendorf, Holm"],["dc.contributor.author","Licha, Tobias"],["dc.contributor.author","Jackson, Daniel J."],["dc.contributor.author","Wolkenstein, Klaus"],["dc.date.accessioned","2020-08-04T08:32:28Z"],["dc.date.available","2020-08-04T08:32:28Z"],["dc.date.issued","2019"],["dc.description.abstract","Eumelanin and pheomelanin are well known and common pigments found in nature. However, their complex polymer structure and high thermostability complicate their direct chemical identification. A widely used analytical method is indirect determination using HPLC with UV detection of both types of melanin by their most abundant oxidation products: pyrrole-2,3-dicarboxylic acid (PDCA), pyrrole-2,3,5-tricarboxylic acid (PTCA), thiazole-4,5-dicarboxylic acid (TDCA), and thiazole-2,4,5-tricarboxylic acid (TTCA). An increasing interest in pigmentation in biological research led us to develop a highly sensitive and selective method to identify and quantify these melanin markers in diverse biological samples with complex matrices. By introducing solid-phase extraction (SPE, reversed-phase) following alkaline oxidation we could significantly decrease background signals while maintaining recoveries greater than 70%. Our HPLC-UV-MS method allows for confident peak identification via exact mass information in corresponding UV signals used for quantitation. In addition to synthetic melanin and Sepia officinalis ink as reference compounds eumelanin markers were detected in brown human hair and a brown bivalve shell (Mytilus edulis). Brown feathers from the common chicken (Gallus g. domesticus) yielded all four eumelanin and pheomelanin markers. The present method can be easily adapted for a wide range of future studies on biological samples with unknown melanin content."],["dc.identifier.doi","10.1371/journal.pone.0223552"],["dc.identifier.pmid","31622353"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16606"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/67513"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.relation.orgunit","Abteilung Geobiologie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Quantitation of eumelanin and pheomelanin markers in diverse biological samples by HPLC-UV-MS following solid-phase extraction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]