Fumonisins B3 solutions are mycotoxins, produced by molds of genus Fusarium. 

Six types of fumonisins and their structures have been discovered: fumonisin (B1, B2, B3, B4, A1 and A2). It is responsible for toxic properties of corn contaminated with Fusarium moniliforme. It is Used for determination of fumonisin B1, fumonisin B2 and fumonisin B3 in traditional chinese medicines by ultra-high-performance liquid chromatography-tandem mass spectrometry. It is used as analytical standard for determining fumonisins in stored wheat samples by HPLC analysis and in corn containing foods.