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Magnesium L-Threonate is supplied by Rexar as a chemical reference material for analytical chemistry, compositional verification and laboratory-based comparison workflows. This material is intended for controlled research environments requiring verified chemical identity, defined salt composition and consistent reference specifications.
Magnesium L-Threonate (CAS 778571-57-6) is available directly through the Rexar webshop and supplied in sealed laboratory packaging for distribution within the EU.
Rexar Technical Compound Datasheet (PDF)
Magnesium L-Threonate is the magnesium salt of L-threonic acid, a metabolite structurally derived from ascorbic acid oxidation pathways. The compound consists of divalent magnesium cations coordinated by threonate anions through ionic and coordination interactions.
The molecular formula C8H14MgO10 reflects the stoichiometric association of magnesium with two threonic acid moieties in salt form. As an ionic compound, the structure is defined by electrostatic interactions between Mg2+ and carboxylate functional groups.
Magnesium is a divalent alkaline earth metal ion that typically exhibits octahedral coordination geometry in aqueous and solid-state environments. In magnesium L-threonate, the Mg2+ ion may coordinate with oxygen atoms from carboxylate and hydroxyl groups of the threonate ligand.
The coordination environment can influence crystallinity, solubility and thermal behaviour. Variations in hydration state may also impact structural arrangement under laboratory conditions.
L-threonic acid contains multiple hydroxyl groups and a terminal carboxylic acid group. Upon salt formation, deprotonation of the carboxyl group allows ionic interaction with magnesium.
The compound therefore contains:
This combination produces a polar, hydrophilic compound with defined aqueous solubility characteristics.
Magnesium salts frequently exist in hydrated forms depending on storage conditions and manufacturing processes. Water molecules may coordinate to the magnesium centre or be incorporated into the crystal lattice.
Analytical characterisation may therefore include determination of water content through Karl Fischer titration or thermogravimetric analysis (TGA).
Magnesium L-Threonate is typically encountered as a white powder. As an ionic compound with multiple hydroxyl groups, it demonstrates hygroscopic tendencies under high humidity conditions.
Physicochemical evaluation may include:
Quantitative analysis of magnesium content may be performed using atomic absorption spectroscopy (AAS), inductively coupled plasma optical emission spectroscopy (ICP-OES) or ICP-MS techniques. These methods allow precise determination of elemental magnesium concentration.
Organic ligand integrity may be confirmed using NMR spectroscopy and IR analysis.
Infrared spectroscopy may display characteristic absorption bands corresponding to carboxylate groups and hydroxyl functionalities. Coordination to magnesium may cause shifts in carbonyl stretching frequencies compared to free L-threonic acid.
Proton NMR signals correspond to the aliphatic backbone of the threonate ligand. Magnesium itself is NMR silent in standard proton NMR experiments.
Due to its ionic nature, chromatographic analysis may require ion-pairing techniques or specialised columns. Reverse-phase methods may be less suitable without appropriate mobile phase modification.
Method development may include buffer optimisation, detection wavelength selection and stability evaluation under analytical conditions.
Magnesium L-Threonate may be used as a qualitative reference material in analytical workflows including compositional verification, elemental quantification and comparative profiling.
Each batch is supplied in sealed laboratory packaging to preserve material integrity. Batch identification supports internal documentation and laboratory traceability procedures.
Molecular structure data and selected physicochemical properties can be consulted via: Magnesium L-Threonate on PubChem .
Is this supplied as a magnesium salt?
Yes. The compound is supplied as the magnesium salt of L-threonic acid.
Can magnesium content be quantified?
Yes. Elemental magnesium can be quantified using AAS, ICP-OES or ICP-MS techniques.
Is the compound hygroscopic?
Magnesium salts may exhibit moisture sensitivity. Storage in dry conditions is recommended.
Is this product intended for human or animal use?
No. This material is supplied exclusively as a laboratory reference compound.
Magnesium ions typically prefer octahedral coordination geometry in aqueous and solid-state environments. In magnesium L-threonate, the Mg2+ cation may interact with multiple oxygen donor atoms originating from carboxylate and hydroxyl groups of the threonate ligand. Depending on hydration state, water molecules may also participate in coordination.
The coordination environment influences crystal packing, solubility behaviour and thermal stability. Variations in hydration can lead to measurable differences in weight percentage composition and analytical response.
Magnesium salts frequently exist in partially hydrated forms. Controlled drying procedures may reduce water content, whereas exposure to atmospheric humidity can increase bound or surface moisture. For reference-grade material, water content determination may be relevant.
Changes in hydration state may influence apparent molecular weight calculations and elemental percentage analysis.
Quantitative magnesium analysis may be performed using:
These techniques provide precise determination of magnesium ion concentration and support compositional verification workflows.
The organic L-threonate ligand may be characterised via proton and carbon NMR spectroscopy. Carboxylate carbon signals and aliphatic backbone resonances provide structural confirmation. Infrared spectroscopy typically reveals strong carboxylate asymmetric and symmetric stretching bands.
Comparison between free L-threonic acid and its magnesium salt may demonstrate shifts in IR carbonyl frequencies due to coordination effects.
As an ionic salt, magnesium L-threonate dissociates in aqueous environments into magnesium ions and threonate anions. The extent of dissociation depends on solution concentration and ionic strength.
pH-dependent solubility behaviour may be evaluated under buffered conditions to ensure reproducible analytical measurement.
Solid-state analysis using powder X-ray diffraction (PXRD) may be employed to assess crystallinity. Coordination compounds can form distinct lattice arrangements depending on manufacturing and drying conditions.
Crystalline consistency contributes to reproducible analytical performance and defined melting or decomposition behaviour.
Magnesium L-threonate belongs to a broader class of organic magnesium salts that include citrate, glycinate and malate derivatives. Structural differences between these salts influence solubility, elemental magnesium percentage and coordination behaviour.
Such distinctions are analytically relevant when magnesium salts are evaluated comparatively within laboratory settings.
Is the compound anhydrous?
Hydration state may vary depending on storage and manufacturing conditions. Analytical verification of water content is recommended where required.
Can magnesium content vary between batches?
Magnesium percentage is determined by stoichiometric composition and hydration state. Batch traceability ensures consistency.
Is elemental analysis recommended?
Elemental magnesium quantification may be performed for compositional verification in analytical workflows.
Is this classified as a supplement?
No. This material is supplied exclusively as a chemical reference compound for laboratory research purposes.
Disclaimer:
This product is intended for laboratory research use only. It is not intended for human or animal consumption, nor for medical, diagnostic, or therapeutic applications.
| Intended use: | Laboratory research and analytical reference purposes only |
| Application area: | Analytical chemistry, reference comparison and method development |
| End user: | Professional users in controlled research environments |
| Regulatory classification: | Chemical reference material |
