Methsuximide
Also known as: 1,3-Dimethyl-3-phenyl-2,5-pyrrolidinedione, 1,3-Dimethyl-3-phenyl-2,5-dioxopyrrolidine, 1,3-Dimethyl-3-phenyl-pyrrolidin-2,5-dione, 1,3-dimethyl-3-phenylpyrrolidine-2,5-dione, 1,3-Dimethyl-3-phenyl-succinimide, Mesuximide, Celontin, Petinutin, PM 396, Mesuximidum, Methsuximid, Metsuccimide
Methsuximide (CAS 77-41-8) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C12H13NO2 and a molecular weight of 203.23700 g/mol. Key properties include a melting point of 52-53°, a boiling point of 489.2ºC at 760 mmHg, a density of 1.59g/cm3 and a flash point of 191.7ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H412 — Harmful to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 77-41-8
- Jingsj CID
- J-1958783-1
- Molecular Formula
- C12H13NO2
- Molecular Weight
- 203.23700 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 52-53° |
|---|---|
| Boiling Point | 489.2ºC at 760 mmHg |
| Density | 1.59g/cm3 |
| Flash Point | 191.7ºC |
| Exact Mass | 203.09500 |
| PSA | 37.38000 |
| LogP | 1.27090 |
| Refractive Index | 1.692 |
| Storage Conditions | Refrigerator |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H412 — Harmful to aquatic life with long lasting effects
Activity & Biological Data
| Additional Information | [1]. MARY LOUISE SCHOLL, et al. Celontin - a New Anticonvulsant. |
|---|
Frequently Asked Questions
What is the CAS number of Methsuximide?
The CAS number of Methsuximide is 77-41-8.
What are the molecular formula and molecular weight of Methsuximide?
Methsuximide has molecular formula C12H13NO2 and molecular weight 203.23700 g/mol.
Is Methsuximide hazardous?
Methsuximide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H412 — Harmful to aquatic life with long lasting effects.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methsuximide (CAS 77-41-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958783-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.