(T-4)-Bis(1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinecarboxylato-κN3,κO4)magnesium

This compound is typically obtained as a white to off-white crystalline powder. Its molecular formula is C10H6MgN4O8, corresponding to a molecular weight of 334.48. It is stable under normal storage conditions and should be kept in a cool, dry place. It exhibits low solubility in water and common organic solvents. The structure features a magnesium ion coordinated by two orotate ligands through both nitrogen and oxygen atoms. Storage in tightly sealed containers protected from light and moisture at ambient temperature is generally adequate.

(T-4)-Bis(1,2,3,6-tetrahydro-2,6-dioxo-4-pyrimidinecarboxylato-κN3,κO4)magnesium, commonly known as magnesium orotate, is a coordination compound consisting of a central magnesium ion complexed with two molecules of orotic acid. Orotic acid is a naturally occurring pyrimidinecarboxylic acid that serves as an intermediate in the biosynthesis of pyrimidine nucleotides, which are essential components of nucleic acids. The magnesium ion is chelated through both the nitrogen and oxygen atoms of the orotate ligands, forming a stable, neutral complex with defined tetrahedral geometry. This compound combines the physiological importance of magnesium, an essential mineral involved in numerous enzymatic reactions and cellular processes, with the potential metabolic benefits of orotic acid. Its unique structure allows for efficient delivery of magnesium to cells, with the orotate moiety acting as a carrier that facilitates cellular uptake.

Dietary Supplement and Mineral Source
Magnesium orotate is primarily used as a highly bioavailable magnesium supplement for addressing magnesium deficiency. The orotate moiety enhances cellular absorption of magnesium, making it more effective than some inorganic magnesium salts. It is employed in nutritional formulations to support overall health, particularly for individuals with increased magnesium requirements or those experiencing gastrointestinal discomfort with other magnesium supplements due to its lower laxative effect.

Cardiovascular Health Support
This compound is used as an adjuvant treatment in various cardiac conditions, including congestive heart failure, hypertension, and post-operative cardiac status. Magnesium orotate combines the cardiovascular protective effects of both magnesium and orotic acid, potentially reducing cellular magnesium loss in heart tissue and providing efficacy in supporting heart function. It has also shown protective effects against atherosclerotic vascular changes.

Antioxidant and Metabolic Support
Orotic acid, as a key intermediate in pyrimidine biosynthesis, promotes the synthesis of enzymes that act as free radical scavengers, contributing to antioxidant defenses. This property, combined with magnesium's essential role in energy production and muscle function, makes magnesium orotate valuable for supporting overall cellular metabolism and protecting against oxidative stress. It is investigated for its potential to improve mitochondrial function and exercise performance.

Pharmaceutical and Research Applications
In pharmaceutical research, magnesium orotate serves as a model compound for studying metal-pyrimidine coordination chemistry and for investigating the therapeutic potential of metal complexes. It is used in formulation development for mineral supplements and as a reference standard in analytical methods for quality control of orotate-containing products. Research continues into its potential applications in treating infectious diseases and myocardial infarction.