Description

N-Phenylmaleimide (CAS 941-69-5) is a high-purity organic compound with the molecular formula C₁₀H₇NO₂ and IUPAC name 1-phenylpyrrole-2,5-dione. This white to pale yellow crystalline solid is widely utilized as a versatile building block in polymer chemistry, pharmaceuticals, and materials science. With a molecular weight of 173.17 g/mol, it exhibits excellent reactivity as a Michael acceptor and dienophile in Diels-Alder reactions. Our N-Phenylmaleimide is rigorously tested to ensure ≥98% purity (HPLC) and is supplied in sealed containers under inert atmosphere to maintain stability. Ideal for use as a crosslinking agent, photoinitiator modifier, or intermediate in heterocyclic synthesis. Store in a cool, dry place away from light and moisture.

Properties

• CAS Number: 941-69-5
• Complexity: 246
• IUPAC Name: 1-phenylpyrrole-2,5-dione
• InChI: InChI=1S/C10H7NO2/c12-9-6-7-10(13)11(9)8-4-2-1-3-5-8/h1-7H
• InChI Key: HIDBROSJWZYGSZ-UHFFFAOYSA-N
• Exact Mass: 173.047678466
• Molecular Formula: C10H7NO2
• Molecular Weight: 173.17
• SMILES: C1=CC=C(C=C1)N2C(=O)C=CC2=O
• Topological: 37.4
• Monoisotopic Mass: 173.047678466
• Physical Description: N-phenylmaleimide appears as yellow needles.
• Boiling Point: 324 °F at 12 mmHg
• Melting Point: 192 to 194 °F
• Solubility: Sparingly soluble
• Synonyms: N-Phenylmaleimide, 941-69-5, Maleanil, Maleinanil, Maleimidobenzene, 1-Phenyl-1H-pyrrole-2,5-dione, 1H-Pyrrole-2,5-dione, 1-phenyl-, MALEIMIDE, N-PHENYL-, NSC 8183, N-Fenylimid kyseliny maleinove, EINECS 213-382-0, N-Fenylimid kyseliny maleinove [Czech], BRN 0125098, 9U9KT462VW, DTXSID0041274, AI3-01186, NSC-8183, N-PHENYLMALEIMIDE [MI], DTXCID8021274, EC 213-382-0, 5-21-10-00009 (Beilstein Handbook Reference), n-phenylmaleinimide, N-phenylmaleic imide, IMILEX P, n-phenylmaleic acid imide, 213-382-0, 1-phenylpyrrole-2,5-dione, 1-phenyl-2,5-dihydro-1H-pyrrole-2,5-dione, N-phenyl maleimide, MFCD00005502, 1-Phenyl-pyrrole-2,5-dione, CHEMBL76012, 1-phenylazoline-2,5-dione, UNII-9U9KT462VW, N-phenylmaleinimde, n-phenylmale-imide, N-phenyl-maleinimide, N-phenyl maleic imide, N-Phenylmaleimide, 97%, WLN: T5VNVJ BR, ChemDiv3_000283, N-Phenylpyrrole-2,5-dione, SCHEMBL18713, 1H-Pyrrole-2, 1-phenyl-, SCHEMBL1394729, SCHEMBL1513841, SCHEMBL8405186, Pyrrole-1,5-dione, N-phenyl-, SCHEMBL10618824, HIDBROSJWZYGSZ-UHFFFAOYSA-, NSC8183, CHEBI:230728, HMS1473M19, STR03760, Tox21_300672, 1-Phenyl-1H-pyrrole-2,5-dione #, BDBM50300353, SBB007849, STL195609, AKOS000249503, CS-W019590, FP06263, IDI1_019601, UPCMLD0ENAT5455323:001, N-Phenylmaleimide, >=98.0% (HPLC), NCGC00176508-01, NCGC00176508-02, NCGC00254580-01, AC-20477, CAS-941-69-5, PD135235, DB-057478, EU-0033370, NS00006686, P0900, ST50411944, EN300-20769, D77858, BRD-K27141229-001-01-9, Q27273236, F0266-1301, Z104481692, 1-Phenyl-1H-pyrrole-2,5-dione; N-phenylmaleic imide; Maleimidobenzene, InChI=1/C10H7NO2/c12-9-6-7-10(13)11(9)8-4-2-1-3-5-8/h1-7H

Application

N-Phenylmaleimide serves as a key monomer for synthesizing heat-resistant polymers and copolymers with styrene or acrylates. It acts as an effective crosslinker in rubber vulcanization and as a modifier for epoxy resins. The compound is also valuable in pharmaceutical research for creating biologically active molecules through its reactive double bond. Additionally, it finds use in advanced material applications such as photoresists and liquid crystal displays.

Safety and Hazards

GHS Hazard Statements

• H301: Toxic if swallowed [Danger Acute toxicity, oral]
• H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]

Precautionary Statements

• P260, P264, P270, P301+P316, P308+P316, P321, P330, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (100%)
• Skin Irrit. 2 (94.2%)
• Skin Sens. 1 (92.7%)
• Eye Dam. 1 (83.2%)
• Eye Irrit. 2 (13.9%)
• Acute Tox. 1 (49.6%)
• STOT SE 3 (49.6%)
• Aquatic Acute 1 (93.4%)
• Aquatic Chronic 1 (59.1%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.