Name: Calcium citrate malate Molecular formula: (C6H7O7)x(C4H5O5)y(Ca2+)z CAS number: 142606-53-9C . Calcium citrate malate is related to, but different from, calcium malate. Calcium citrate-malate has high bioavailability and thus has been the subject of calcium studies in these populations. Positive effects have been seen in prepubertal girls, adolescents, and postmenopausal women. The addition of trace minerals and vitamin D in separate trials has improved the effect of calcium citrate-malate on bone density and shown a reduction of fracture risk.