Magnesium 4-Nitrobenzyl Malonate TCI M0938

Chemical Identity

CAS No.: 83972-01-4
PubChem: CID 13338668·SID 87572920
Formula: C20H16MgN2O12
Molecular weight: 500.7 g/mol
Reference databases: ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: magnesium bis(3-[(4-nitrophenyl)methoxy]-3-oxopropanoate)
SMILES: C1=CC(=CC=C1COC(=O)CC(=O)[O-])[N+](=O)[O-].C1=CC(=CC=C1COC(=O)CC(=O)[O-])[N+](=O)[O-].[Mg+2]
InChIKey: WAFDWKYNSTVECG-UHFFFAOYSA-L

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TCI M0938 Magnesium 4-Nitrobenzyl Malonate, bearing CAS number 83972-01-4, is the magnesium salt of a malonate mono-ester in which the ester group is a 4-nitrobenzyl moiety. This compound is a specialised reagent designed to transfer a malonate unit onto an acyl group, delivering β-keto esters with high efficiency. In the organic synthesis laboratory, the material functions as an important building block that bridges activated carboxylic acid derivatives and the β-keto ester framework, one of the most versatile intermediates available for the construction of complex molecules.

The property that leads chemists to select this reagent is its magnesium salt form, which arrives ready to use, so the operator does not need to generate the malonate enolate separately with a strong base that is prone to causing side reactions. The 4-nitrobenzyl group acts as a carboxyl protecting group that remains stable under many reaction conditions yet can be removed selectively by hydrogenolysis or reduction, making it very well suited to fragile target molecules. Its solid form allows accurate weighing and straightforward storage, and supports portionwise addition in laboratory-scale reactions.

In Indonesia, this reagent is used principally in organic synthesis laboratories at universities and research institutes, as well as in research and development units working on pharmaceutical intermediates and fine chemicals. Because it is supplied as a stable solid in defined pack sizes, it fits the working pattern of Indonesian laboratories, where reagents are ordered for specific projects and must remain usable across an extended research programme rather than being consumed in a single campaign.

Related TCI products

β-Keto ester synthesis: the reagent transfers a malonate unit directly onto an acyl group, giving the β-keto ester framework efficiently without a separate enolate generation step.
Acylation of activated carboxylic acid derivatives: it converts activated acid derivatives into β-keto esters, bridging two classes of intermediate that are otherwise awkward to connect.
Protected carboxyl chemistry: the 4-nitrobenzyl ester functions as a carboxyl protecting group that survives many reaction conditions and is later removed selectively.
Synthesis of sensitive target molecules: selective deprotection by hydrogenolysis or reduction lets chemists unmask the acid without exposing fragile substrates to harsh acidic or basic cleavage.
Multi-step construction of complex molecules: as a non-heterocyclic building block, it supplies a versatile β-keto ester intermediate for onward elaboration in extended synthetic routes.

Brand	TCI
CAS number	83972-01-4
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes	available in the standard TCI catalogue pack sizes; please confirm the current option when ordering.
Physical form	solid, suitable for accurate weighing and portionwise addition.
Storage	keep in the tightly closed original container, protected from moisture.

Store the reagent in its tightly closed original container in a cool, dry place, away from moisture, since magnesium malonate salts are best protected from humid air. Keep the container clearly labelled and grouped with other organic synthesis reagents rather than with oxidising agents. Weigh and transfer the solid in a fume hood using clean, dry spatulas and dry glassware, and close the container promptly after use to limit exposure to atmospheric moisture. Wear a laboratory coat, safety glasses, and chemically resistant gloves during handling, and consult the manufacturer's safety data sheet before first use for full precautionary guidance and disposal requirements.

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