The 2,5-Furandione-3,4-¹³C₂(9CI) is an organic compound with the formula C₄H₂O₃. The systematic name of this chemical is (3,4-~13~C_2_)furan-2,5-dione. With the CAS registry number 41403-35-4, it is also named as Maleic anhydride-2,3-¹³C₂. The product's categories are Alphabetical Listings; M; Stable Isotopes.

Pysical properties about 2,5-Furandione-3,4-¹³C₂(9CI) are: (1)Index of Refraction: 1.515; (2)Molar Refractivity: 19.917 cm³; (3)Molar Volume: 66.048 cm³; (4)Polarizability: 7.896×10^-24cm³; (5)Surface Tension: 53.735 dyne/cm; (6)Density: 1.485 g/cm³.

Preparation: this chemical can be prepared by fumaric acid-2,3-13C. This reaction will need reagent phosphorus pentoxide. The reaction time is 3.5 hours with reaction temperature of 155 - 160 °C. The yield is about 90%.

When you are using this chemical, please be cautious about it as the following:
It is harmful by inhalation, in contact with skin and if swallowed. Please take off immediately all contaminated clothing. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical can cause burns. When you are using it, wear suitable gloves and eye/face protection. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: C1=CC(=O)OC1=O
(2)InChI: InChI=1/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H/i1+1,2+1
(3)InChIKey: FPYJFEHAWHCUMM-ZDOIIHCHEF
(4)Std. InChI: InChI=1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H/i1+1,2+1
(5)Std. InChIKey: FPYJFEHAWHCUMM-ZDOIIHCHSA-N