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Psilocybia / Chemistry / Baeocystin

Compound record

Baeocystin

A mono-methyl analogue of psilocybin, described from Psilocybe baeocystis in the 1960s.

Molecular formula
C₁₁H₁₅N₂O₄P

01First description

Leung and Paul reported baeocystin as a mono-methyl analogue of psilocybin from saprophytic culture of Psilocybe baeocystis in the Journal of Pharmaceutical Sciences in 1967, and reported baeocystin together with norbaeocystin as new analogues of psilocybin from the same species in the same journal in 1968.

Neither paper is available in abstract or full text through the indexes consulted here. Both are cited for the reports their titles describe.

Sources: [leung-paul-1967-baeocystin] [leung-paul-1968-baeocystin-norbaeocystin]

02Occurrence in Psilocybe cubensis

A 2026 study quantified psilocybin, psilocin, baeocystin, norbaeocystin, aeruginascin and norpsilocin in Psilocybe cubensis fruiting bodies, reporting that variability between strains of a single species grown under standardised conditions had been insufficiently characterised.

That paper is cited here at abstract level. The quantitative values it reports are not reproduced on this page and have not been checked against its tables.

Sources: [sharchaton-2026-tryptamine-variability]

03Scope of this record

This record covers chemical identity and the published history of the compound. It does not describe effects, preparation or dose, and nothing here is guidance for use.

04References

  1. Leung A; Paul A (1967). Baeocystin, a Mono-Methyl Analog of Psilocybin from Psilocybe baeocystis Saprophytic Culture. Journal of Pharmaceutical Sciences 56(1), 146. DOI: 10.1002/jps.2600560132 Source record ↗

    Source class: primary.

    Source verification history
    • metadata: verified · 2026-09-15 · Psilocybia editorial. Verification source

      Bibliographic record retrieved from Crossref. Authors, title, journal, volume, pages and year read directly from that record.

    • doi: verified · 2026-09-15 · Psilocybia editorial. Verification source

      DOI resolved and matched against the Crossref bibliographic record.

    • content: unavailable · 2026-09-15 · Psilocybia editorial. Verification source

      No abstract or full text available through the indexes consulted. Only the bibliographic record and title were inspected, so this source supports the fact of its own report and not any detail within it.

  2. Leung A; Paul A (1968). Baeocystin and Norbaeocystin: New Analogs of Psilocybin from Psilocybe baeocystis. Journal of Pharmaceutical Sciences 57(10), 1667-1671. DOI: 10.1002/jps.2600571007 Source record ↗

    Source class: primary.

    Source verification history
    • metadata: verified · 2026-09-15 · Psilocybia editorial. Verification source

      Bibliographic record retrieved from Crossref. Authors, title, journal, volume, pages and year read directly from that record.

    • doi: verified · 2026-09-15 · Psilocybia editorial. Verification source

      DOI resolved and matched against the Crossref bibliographic record.

    • content: unavailable · 2026-09-15 · Psilocybia editorial. Verification source

      No abstract or full text available through the indexes consulted. Only the bibliographic record and title were inspected, so this source supports the fact of its own report and not any detail within it.

  3. Sharchaton A; Parsha S; Azerrad S; Dekel Y; Rabah N; Páleníček T; Kurzbaum E (2026). Surprising Variability in Tryptamine Profiles of Psilocybe cubensis Fruiting Bodies: Inter- and Intra-Strain Differences Across 14 Strains Cultivated Under Controlled Conditions. Journal of Fungi 12(7), 486. DOI: 10.3390/jof12070486 Source record ↗

    Source class: primary.

    Source verification history
    • metadata: verified · 2026-09-15 · Psilocybia editorial. Verification source

      Bibliographic record retrieved from Crossref. Authors, title, journal, volume, pages and year read directly from that record.

    • doi: verified · 2026-09-15 · Psilocybia editorial. Verification source

      DOI resolved and matched against the Crossref bibliographic record.

    • content: verified · 2026-09-15 · Psilocybia editorial. Verification source

      Abstract inspected via Europe PMC. Full text was not retrieved; claims drawn from this source are scoped to the abstract.