Linked from
The 12 pages that link to Tartaric acid, each with the reason it gives.
Louis PasteurRelated: Its crystals enabled Pasteur’s discovery of molecular asymmetry.
Fenton reactionRelated: It was the substrate in Fenton’s original reported oxidation.
StereocenterBroader topic: Its symmetry shows how two stereocenters can yield an achiral molecule.
Grape juiceRelated: It is a major source of grape juice’s characteristic acidity.