The Norcantharidin, with the CAS registry number 5442-12-6, is also known as 7-Oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride. It belongs to the product categories of Norbornene Derivatives; Plant extract. This chemical's molecular formula is C₈H₈O₄ and molecular weight is 168.15. What's more, its systematic name is 4,10-Dioxatricyclo[5.2.1.02,6]decane-3,5-dione. It is used as antineoplastic agents.

Physical properties of Norcantharidin are: (1)ACD/LogP: -0.971; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.97; (4)ACD/LogD (pH 7.4): -0.97; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 7.06; (8)ACD/KOC (pH 7.4): 7.06; (9)#H bond acceptors: 4; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 52.6 Å²; (13)Index of Refraction: 1.55; (14)Molar Refractivity: 36.47 cm³; (15)Molar Volume: 114.53 cm³; (16)Polarizability: 14.458×10^-24cm³; (17)Surface Tension: 50.12 dyne/cm; (18)Density: 1.468 g/cm³; (19)Flash Point: 167.017 °C; (20)Enthalpy of Vaporization: 60.841 kJ/mol; (21)Boiling Point: 362.464 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: C1CC2C3C(C1O2)C(=O)OC3=O
(2)Std. InChI: InChI=1S/C8H8O4/c9-7-5-3-1-2-4(11-3)6(5)8(10)12-7/h3-6H,1-2H2
(3)Std. InChIKey: JAABVEXCGCXWRR-UHFFFAOYSA-N 

The toxicity data is as follows: