5-(2,5-Dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic Anhydride TCI D1901

Chemical Identity

CAS No.: 73003-90-4
PubChem: CID 175380·SID 87568361
Formula: C13H12O6
Molecular weight: 264.23 g/mol
Purity: >95.0%(T)
Reference databases: ChemSpider·ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 5-(2,5-dioxooxolan-3-yl)-7-methyl-3a,4,5,7a-tetrahydro-2-benzofuran-1,3-dione
SMILES: CC1=CC(CC2C1C(=O)OC2=O)C3CC(=O)OC3=O
InChIKey: DGQOZCNCJKEVOA-UHFFFAOYSA-N
MDL: MDL00039141

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TCI D1901 is an alicyclic dianhydride whose full name is 5-(2,5-Dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic Anhydride (CAS 73003-90-4). Each molecule carries two carboxylic acid anhydride groups, so it is difunctional. In the laboratory it is classed as a monomer within the polymer and macromolecule reagent group. Its anhydride groups can react with amines, alcohols, or epoxy groups to form imide bonds, ester bonds, or crosslinked networks. This makes it an important material for researchers who synthesize high-performance polymers or develop new resin systems.

The compound's defining feature is its alicyclic backbone. This non-aromatic ring sets it apart from aromatic dianhydrides. Researchers usually consider structures like this when they want to control the properties of the final polymer, such as solubility, optical clarity, or chain flexibility. With two anhydride groups, it can build long polymer chains through polycondensation with diamines. It can also form three-dimensional networks when it reacts with hardeners or epoxy resins. The material is a solid, so it is easy to weigh accurately. Like most anhydrides it is sensitive to moisture, because water can hydrolyze the anhydride groups.

In Indonesian laboratories, this monomer is mainly relevant to university research groups in polymer chemistry, materials science, and chemical engineering, and to industrial R&D teams working on resins, coatings, and specialty polymers. Researchers who are exploring polyimide or polyester synthesis, or studying epoxy curing behaviour, can use it as a building block in small-scale experiments. Because it is moisture-sensitive, laboratories in Indonesia's humid tropical climate should pay close attention to dry storage and handling to keep the reagent reactive.

TCI brochures (PDF)

Raw Materials for Polyimide Synthesis 2026-05-11 · p. 2
Monomers 2025-05-28 · p. 37

Related TCI products

Polyimide synthesis: the two anhydride groups react with diamines to form long polymer chains through polycondensation, and then imide linkages, so the compound works as a dianhydride monomer.
Epoxy resin curing studies: the anhydride groups can react with epoxy groups to form a crosslinked three-dimensional network, so researchers can use it to examine anhydride-type hardener systems.
Polyester and ester-linked polymer research: the anhydride groups react with alcohols to form ester bonds, which makes the compound useful for building polymers or modifying polyol-based materials.
Tuning polymer properties: its non-aromatic alicyclic backbone gives researchers a way to adjust solubility, clarity, or chain flexibility compared with polymers made from aromatic dianhydrides.
Development of new resin systems: because it is difunctional, it can serve as a crosslinking or chain-building component in experimental formulations for coatings, adhesives, or specialty materials.

Brand	TCI (product code D1901)
CAS number	73003-90-4
Molecular formula	—
Purity	—
Category	Materials Science > Polymer/Macromolecule Reagents > Monomers
Pack sizes	refer to the pack options listed on this product page
Physical form	solid
Storage	moisture-sensitive; keep tightly closed in a dry place

Store this compound in its original, tightly sealed container in a cool, dry place away from direct sunlight and heat. It is moisture-sensitive and its anhydride groups can hydrolyze, so keep exposure to air short, close the container straight after use, and consider a desiccator or a dry inert atmosphere for longer storage. This matters especially in humid tropical conditions. Keep it away from water, amines, alcohols, and strong bases unless you are using them in a planned reaction. Use standard laboratory precautions: wear safety glasses, gloves, and a lab coat, weigh and transfer the solid in a fume hood or well-ventilated area, avoid breathing in dust, and avoid contact with skin and eyes. Read the supplier's Safety Data Sheet for specific hazard and disposal information before use.

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