Monomethyl Isophthalate

• CAT Number: R023300
• CAS Number: 1877-71-0
• Molecular Formula: C9H8O4
• Molecular Weight: 180.16
• Purity: ≥95%
• Synonyms: 1-Methyl Ester-1,3-benzenedicarboxylic Acid; Monomethyl Ester-1,3-benzenedicarboxylic Acid; Methyl Ester Isophthalic Acid; Monomethyl Ester Isophthalic Acid; 3-(Methoxycarbonyl)benzoic Acid; 3-Carbomethoxybenzoic Acid; Methyl 3-Carboxybenzoate; Methy
• Storage: Store at -20°C
• IUPAC Name: 3-methoxycarbonylbenzoic acid
• InChI: InChI=1S/C9H8O4/c1-13-9(12)7-4-2-3-6(5-7)8(10)11/h2-5H,1H3,(H,10,11)
• InChIKey: WMZNGTSLFSJHMZ-UHFFFAOYSA-N
• SMILES: COC(=O)C1=CC=CC(=C1)C(=O)O

Monomethyl Isophthalate（Cat No.:R023300）is a monoester derivative of isophthalic acid, featuring a methyl ester group and a free carboxylic acid on a benzene ring substituted at the 1,3-positions. It serves as a versatile intermediate in the synthesis of polymers, plasticizers, resins, and specialty chemicals. Its bifunctional nature allows for further esterification, amidation, or polymerization reactions. Monomethyl isophthalate is also useful in the production of pharmaceutical intermediates and advanced materials. Supplied at high purity, it is ideal for research and industrial applications in organic synthesis, materials science, and chemical manufacturing.