Phenytoin
Also known as: 5,5-Diphenylhydantoin, 5,5-Diphenyl-2,4-imidazolidinedione, Diphenylhydantoin, Dilantin, DPH
Phenytoin (CAS 57-41-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H12N2O2 and a molecular weight of 252.268 g/mol. Key properties include a melting point of 293-295 °C(lit.), a boiling point of 464.0±55.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 305.8±20.8 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H350 — May cause cancer and H360 — May damage fertility or the unborn child. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 57-41-0
- Jingsj CID
- J-1100960-7
- Molecular Formula
- C15H12N2O2
- Molecular Weight
- 252.268 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 293-295 °C(lit.) |
|---|---|
| Boiling Point | 464.0±55.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 305.8±20.8 °C |
| Exact Mass | 252.089874 |
| PSA | 58.20000 |
| LogP | 2.29 |
| Vapor Pressure | 0.0±1.2 mmHg at 25°C |
| Refractive Index | 1.652 |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases. |
| Additional Property | DMSO: soluble | <0.01 g/100 mL at 19 ºC |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H350 — May cause cancer
- H360 — May damage fertility or the unborn child
Activity & Biological Data
| Additional Information | [1]. Rogawski, M.A. and W. Loscher, The neurobiology of antiepileptic drugs. Nat Rev Neurosci, 2004. 5(7): p. 553-64. [2]. Porter, R.J., et al., Mechanisms of action of antiseizure drugs. Handb Clin Neurol, 2012. 108: p. 663-81. [3]. Balaji, S., Medical therapy for sudden death. Pediatr Clin North Am, 2004. 51(5): p. 1379-87. |
|---|
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of Phenytoin?
The CAS number of Phenytoin is 57-41-0.
What are the molecular formula and molecular weight of Phenytoin?
Phenytoin has molecular formula C15H12N2O2 and molecular weight 252.268 g/mol.
Is Phenytoin hazardous?
Phenytoin has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H350 — May cause cancer; H360 — May damage fertility or the unborn child.
What are the upstream and downstream products of Phenytoin?
For Phenytoin, Upstream Products: Benzil, Urea, 5,5-Diphenyl-2-thiohydantoin; Downstream Products: Benzhydrylamine, Sodium ethoxide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Phenytoin (CAS 57-41-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1100960-7 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.