N-Methylphthalimide
N-Methylphthalimide (CAS: 550-44-7, Formula: C9H7NO2) is a chemical compound with a molecular weight of 161.16 g/mol. It is primarily utilised as an organic building block and in chemical synthesis. Its properties also lend it to applications as a derivatisation reagent, particularly in analytical and chromatography methods.

Organic Synthesis Intermediate
N-Methylphthalimide serves as a valuable intermediate in the synthesis of various organic compounds. Its cyclic imide structure allows for diverse chemical transformations.
Analytical Derivatisation Reagent
This compound is employed as a derivatisation reagent in analytical chemistry. It is particularly useful for enhancing the detection and separation of analytes in chromatography, including HPLC.
Building Block for Complex Molecules
As an organic building block, N-Methylphthalimide is incorporated into the construction of more complex molecular architectures in research and development settings.
| Molecular weight | 161.16 |
|---|---|
| Empirical formula | C9H7NO2 |
| Assay | 98% |
| Melting point | 129-132 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is N-Methylphthalimide used for?
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N-Methylphthalimide is used as an intermediate in organic synthesis, an analytical derivatisation reagent for chromatography (including HPLC), and as a building block for complex molecules.
What is the CAS number and formula for N-Methylphthalimide?
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The CAS number for N-Methylphthalimide is 550-44-7 and its empirical formula is C9H7NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies N-Methylphthalimide with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should N-Methylphthalimide be handled safely?
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N-Methylphthalimide is classified with hazard statements H315, H319, and H335, indicating it causes skin irritation, serious eye irritation, and may cause respiratory irritation. Handle with appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, and gloves, in a well-ventilated area.
How is N-Methylphthalimide packed, shipped, and exported?
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N-Methylphthalimide is carefully packed and exported by Tech Serve Solutions in compliance with international shipping regulations for chemical substances.
How can I request a sample or quote for N-Methylphthalimide?
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To request a sample or a quote for N-Methylphthalimide, please contact our sales team through the website or by phone.
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