The CAS registry number of Bis(4-maleimidophenyl)methane is 13676-54-5. Its EINECS registry number is 237-163-4. The IUPAC name is 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione. In addition, the molecular formula is C₂₁H₁₄N₂O₄ and the molecular weight is 358.35. It is also called 1,1'-methylenebis(4-maleimidobenzene). What's more, it is a kind of yellow to brownish fine crystalline powder and belongs to the classes of Industrial/Fine Chemicals; Diphenylmethanes (for High-Performance Polymer Research); Functional Materials; N-Substituted Maleimides; N-Substituted Maleimides, Succinimides & Phthalimides; Reagent for High-Performance Polymer Research.

Physical properties about this chemical are: (1)ACD/LogP: 1.95; (2)ACD/LogD (pH 5.5): 1.95; (3)ACD/LogD (pH 7.4): 1.95; (4)ACD/BCF (pH 5.5): 17.88; (5)ACD/BCF (pH 7.4): 17.88; (6)ACD/KOC (pH 5.5): 274.19; (7)ACD/KOC (pH 7.4): 274.19; (8)#H bond acceptors: 6; (9)#Freely Rotating Bonds: 4; (10)Polar Surface Area: 74.76 Å²; (11)Index of Refraction: 1.689; (12)Molar Refractivity: 95.7 cm³; (13)Molar Volume: 250.4 cm³; (14)Polarizability: 37.94 ×10^-24cm³; (15)Surface Tension: 69.8 dyne/cm; (16)Density: 1.43 g/cm³; (17)Flash Point: 278.3 °C; (18)Enthalpy of Vaporization: 87.39 kJ/mol; (19)Boiling Point: 584.9 °C at 760 mmHg; (20)Vapour Pressure: 1.15E-13 mmHg at 25°C.

Uses of Bis(4-maleimidophenyl)methane: it can react with 2,6-Di-tert-butyl-4-mercapto-phenol to get 4,4'-bis[3-(3,5-di-t-butyl-4-hydroxyphenylthio)-2,5-dioxopyrrolidin-1-yl]diphenylmethane. This reaction will need reagent triethylamine and solvents toluene and CH₂Cl₂. The yield is about 48% with ambient temperature.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. And it is toxic by inhalation. During using it, wear suitable gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. And in case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.).

You can still convert the following datas into molecular structure:
(1)SMILES: O=C1\C=C/C(=O)N1c2ccc(cc2)Cc3ccc(cc3)N4C(=O)\C=C/C4=O
(2)InChI: InChI=1/C21H14N2O4/c24-18-9-10-19(25)22(18)16-5-1-14(2-6-16)13-15-3-7-17(8-4-15)23-20(26)11-12-21(23)27/h1-12H,13H2
(3)InChIKey: XQUPVDVFXZDTLT-UHFFFAOYAR

The toxicity data is as follows: