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CAS number 580-74-5
PubChem 5378293
ChemSpider 21106491
Jmol-3D images Image 1
Molecular formula C18H12N2O2
Molar mass 288.30 g mol−1
Appearance Yellow crystals
Melting point 200 °C (decomposes)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Xantocillin (INN), also known as xanthocillin X or ophthocillin, was the first reported natural product found to contain the isocyanide functional group. It was first isolated from Penicillium notatum by Westling in 1950[1] and subsequently from several other sources.[2][3]

See also[edit]

Questiomycin A


  1. ^ R. ROTHE (1950). Pliarnzazie 5: 190. 
  2. ^ Paul J. Scheuer (1992). "Isocyanides and cyanides as natural products". Accounts of Chemical Research 25 (10): 433–439. doi:10.1021/ar00022a001. 
  3. ^ Kozlovskiĭ AG, Zhelifonova VP, Antipova TV, Adanin VM, Novikova ND, Deshevaia EA et al. (2004). "[Penicillium expansum, a resident fungal strain of the orbital complex Mir, producing xanthocillin X and questiomycin A].". Prikl Biokhim Mikrobiol 40 (3): 344–9. PMID 15283339.