Austocystin A

ID 2: 376

Toxin: y

Systematic name:

5H-Furo(3′,2′:4,5)furo(3,2-b)xanthen-5-one, 3a,12a-dihydro-7-chloro-4,6-dimethoxy-, (3aS,12aR)-

Molecular formulae: 


Molecular weight: 372.76

Chemical abstract number: 55256-58-1

Chemical type: Xanthone

Literature reference:

  • Austocystins. Six novel dihydrofuro[3′,​2′:4.5]​furo[3,​2-​b]​xanthenones from Aspergillus ustus. Steyn, Pieter S.; Vleggaar, Robert. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1974), (19), 2250-6.

References URL: 

Aspergillus Species known to produce this metabolite:


In cultures of primary monkey kidney epithelial cells austocystin A was the most toxic of the austocystins and more toxic than sterigmatocystin.

Structure image:  


Date uploaded: 2005-07-26 00:00:00

Mycotoxin & Metabolites

Mycotoxin & Metabolite database

Aspergillus species produce a large number of secondary metabolites, sometimes referred to as extrolites. We attempt to list them all here and we also collect published papers.

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