(S)-Mephenytoin
(S)-美芬妥英
Also known as: (S)-(+)-Mephenytoin, (S)-5-Ethyl-3-methyl-5-phenyl-2,4-imidazolidinedione, (S)-5-Ethyl-3-methyl-5-phenylhydantoin, 5NC67NU76B, R420KW629U
(S)-Mephenytoin (CAS 70989-04-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H14N2O2 and a molecular weight of 218.252 g/mol. It is also known as (S)-(+)-Mephenytoin, (S)-5-Ethyl-3-methyl-5-phenyl-2,4-imidazolidinedione and (S)-5-Ethyl-3-methyl-5-phenylhydantoin. Key properties include a melting point of 135-138ºC and a density of 1.2±0.1 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 70989-04-7
- Jingsj CID
- J-1958358-9
- Molecular Formula
- C12H14N2O2
- Chinese Name
- (S)-美芬妥英
- Molecular Weight
- 218.252 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 135-138ºC |
|---|---|
| Density | 1.2±0.1 g/cm3 |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of (S)-Mephenytoin?
The CAS number of (S)-Mephenytoin is 70989-04-7.
What are the molecular formula and molecular weight of (S)-Mephenytoin?
(S)-Mephenytoin has molecular formula C12H14N2O2 and molecular weight 218.252 g/mol.
Is (S)-Mephenytoin hazardous?
(S)-Mephenytoin has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "(S)-Mephenytoin (CAS 70989-04-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958358-9 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.