10471-49-5 2,3-Dihydroxybutanedioic acid, calcium salt 3164-34-9 Butanedioic acid, 2,3-dihydroxy-, calcium salt Butanedioic acid, 2,3-dihydroxy-, calcium salt (1:1) Calcium tartarate Calcium tartrate EINECS 221-621-5 Tartaric acid, calcium salt