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50 PROCEEDINGS OF INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED BIOTECHNOLOGYFigure 5. HR-QTOF mass analysis of natural analogs of herboxidiene. (i) PDA chromatogram from S. chromofuscus wild type culture extract (ii) The chromatogram at retention time of 5.50 shows the mass number of 477.2823 and exact mass [M+Na+] of herboxidiene is 461.2874(iii) The chromatogram at retention time of 5.07, 4.76 and 4.50 shows the mass number of 477.2823 and exact mass [M+Na+] of GEX1Q1, GEX1Q2, and GEX1Q24 is 477.2823 (iv) The chromatogram at retention time of 4.23 shows the mass number of 447.2729 and exact mass [M+Na+] of GEX1Q5 is 447.2717
