<span>Fischer projection for D-2-ketotetrose is in Word document below. </span>D-2-ketotetrose is monosaccharide, having both a ketone (a ketose) and four carbons (a tetrose). There are two ketotetroses (the enantiomers) L and D-erythrulose, this is D-erytrhrulose (1,3,4-trihydroxy-2-butanone). The <span>Fischer projection is </span>two-dimensional<span> representation of a </span>three dimensional organic molecule.