1251 antibacterial and cytotoxic natural products of bacterial or fungal origin — formulas, monoisotopic masses and adduct m/z, producing organism, target, and the congener families each one travels with. Weighted for extract-level exclusion: congener series are enumerated rather than represented by one flagship member, and it carries what actually crowds a real chromatogram — 190 entries of laboratory background and microbial housekeeping metabolite alongside the antibiotics themselves. Semi-synthetic and fully synthetic derivatives are excluded.
177Gram-neg / broad
577Cytotoxic
629Anti-Klebsiella
190Known background
171Isobaric at MS1
114With fragment data
780Background ions
1251Total entries
● Run the full databases first — then use this list to triage what they return
No hand-curated list can be exhaustive: the described microbial natural product space is roughly 37,000 compounds, and this is a deliberately opinionated 1251 of them. Match your features against the databases below for coverage; use this page for the judgement call the databases can't make — whether a match is a plausible true hit, a known nuisance chemotype, or one member of a congener family whose other members are also sitting in your data.
~36,500 microbially derived NPs with formulas, exact masses and producing taxa. Free bulk download (CC BY-NC from release 2024_09). The single best MS1 mass-matching resource for this problem.
Experimental MS/MS reference spectra plus molecular networking. Library search gives real spectral matches, not just mass matches, and networking clusters your unknowns with annotated congeners.