Fumonisin B2

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 * Name = Fumonisin B2
 * ImageFile = Fumonisin_B2.JPG
 * ImageName = Fumonisin B2
 * Section1 = {{Chembox Identifiers
 * CASNo = 116355-84-1
 * Section2 = {{Chembox Properties
 * Formula = {{{formula|C{{sub|34}}H{{sub|59}}NO{{sub|14}}
 * MolarMass = 705.8 g/mol

Fumonisin B2 is a mycotoxin produced by the fungus Fusarium verticillioides. It is a structural analog of Fumonisin B1. Fumonisin B2 is more cytotoxic than Fumonisin B1. Fumonisin B2 inhibits sphingosine acyltransferase.

Fumonisin B2 and other fumonisins frequently contaminate maize and other crops.