(1,1-Dimethylethyl)dimethyl[[(1R)-1-methyl-3-butyn-1-yl]oxy]silane is an intermediate in synthesizing (R)-Ochratoxin α (O148525). It is an intermediate in the synthesis of Ochratoxin A (O148490). Ochratoxins are toxic metabolites from Aspergillus ochraceus. Also they are environmental and food contaminants.