(S)-MEPHENYTOIN
- CAS No.
- 70989-04-7
- Chemical Name:
- (S)-MEPHENYTOIN
- Synonyms
- Mephenitoin S;(S)-MEPHENYTOIN;(S)-Mephenitoin;(S)-Mephenytoine;(S)-(+)-MEPHENYTOIN;Mephenytoin Impurity 2;(S)-Mephenytoin - Bio-X ?;(S)-Mephenytoin, 10 mM in DMSO;(S)-5-ETHYL-3-METHYL-5-PHENYLHYDANTOIN;(5S)-5-Ethyl-3-methyl-5-phenylhydantoin
- CBNumber:
- CB7257425
- Molecular Formula:
- C12H14N2O2
- Molecular Weight:
- 218.25
- MDL Number:
- MFCD00270025
- MOL File:
- 70989-04-7.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| (S)-(+)-Mephenytoin solid, ≥98% (HPLC) | UC175 | 5mg | $876.85 |
| (S)-(+)-Mephenytoin solid, ≥98% (HPLC) | UC175 | 10mg | $1610 |
| (S)-Mephenytoin ≥98% | 11913 | 1mg | $39 |
| (S)-Mephenytoin ≥98% | 11913 | 5mg | $96 |
| (S)-Mephenytoin ≥98% | 11913 | 10mg | $173 |
| More product size | |||
| Melting point | 135-138 °C |
|---|---|
| Density | 1.154±0.06 g/cm3(Predicted) |
| storage temp. | 2-8°C |
| solubility | DMSO: soluble |
| pka | 8.07±0.70(Predicted) |
| form | solid |
| color | off-white |
| FDA UNII | D9818430MW |
| UNSPSC Code | 12161501 |
| NACRES | NA.77 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H315-H319-H335 | |||||||||
| Precautionary statements | P261-P264-P270-P301+P312-P302+P352-P305+P351+P338 | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22-36/37/38 | |||||||||
| Safety Statements | 26-36 | |||||||||
| WGK Germany | 2 | |||||||||
| HS Code | 29332100 | |||||||||
| NFPA 704 |
|
(S)-MEPHENYTOIN price More Price(25)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | UC175 | (S)-(+)-Mephenytoin solid, ≥98% (HPLC) | 70989-04-7 | 5mg | $876.85 | 2025-07-31 | Buy |
| Sigma-Aldrich | UC175 | (S)-(+)-Mephenytoin solid, ≥98% (HPLC) | 70989-04-7 | 10mg | $1610 | 2025-07-31 | Buy |
| Cayman Chemical | 11913 | (S)-Mephenytoin ≥98% | 70989-04-7 | 1mg | $39 | 2024-03-01 | Buy |
| Cayman Chemical | 11913 | (S)-Mephenytoin ≥98% | 70989-04-7 | 5mg | $96 | 2024-03-01 | Buy |
| Cayman Chemical | 11913 | (S)-Mephenytoin ≥98% | 70989-04-7 | 10mg | $173 | 2024-03-01 | Buy |
(S)-MEPHENYTOIN Chemical Properties,Uses,Production
Chemical Properties
White Crystalline Solid
Uses
S-Mephenytoin has been used as a CYP2C19 substrate for the analysis of cytochrome P450 metabolism. S-Mephenytoin has also been used as probe substrates for LC/MS-based analysis of relative activity factor (RAF).
Uses
(S)-Mephenytoin can be used as an anticonvulsant agent.
Definition
ChEBI: (S)-Mephenytoin is an imidazolidine-2,4-dione.
Biological Activity
(s)-mephenytoin is an anticonvulsive drug which is metabolized by n-demethylation and 4-hydroxylation (of the aromatic ring). (s)-mephenytoin is a substrate of the cytochrome p450 (cyp) isoform cyp2c19, also known as mephenytoin 4-hydroxylase [1].cyp2c19 is the main mephenytoin 4-hydroxylase in humans implicated in metabolizing a variety of therapeutic agents, such as omeprazole, proguanil, diazepam, propranolol, citalopram, imipramine, and certain barbiturates [2].
Biochem/physiol Actions
CYP2B6 & CYP2C19 substrate. Methenytoin isomer. Anticonvulsant; antiepileptic.
in vitro
in the presence of cytochrome b5, the km value for s-mephenytoin was 1.25 mm with all five purified cytochrome p-450s preparations, and vmax values were 0.8-1.25 nmol of 4-hydroxy product formed per min/nmol of p-450 [1].
References
[1] shimada t, misono k s, guengerich f p. human liver microsomal cytochrome p-450 mephenytoin 4-hydroxylase, a prototype of genetic polymorphism in oxidative drug metabolism. purification and characterization of two similar forms involved in the reaction[j]. journal of biological chemistry, 1986, 261(2): 909-921.
[2] ferguson r j, de morais s m f, benhamou s, et al. a new genetic defect in human cyp2c19: mutation of the initiation codon is responsible for poor metabolism of s-mephenytoin[j]. journal of pharmacology and experimental therapeutics, 1998, 284(1): 356-361.
(S)-MEPHENYTOIN Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| BOC Sciences | +1-631-485-4226 | inquiry@bocsci.com | United States | 19552 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49975 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; +17819995354 | marketing@targetmol.com | United States | 32435 | 58 |
| Nantong HI-FUTURE Biology Co., Ltd. | +undefined18051384581 | sales@chemhifuture.com | China | 3135 | 58 |
| TargetMol Chemicals Inc. | +1-781-999-5354; | support@targetmol.com | United States | 39035 | 58 |
| GIHI CHEMICALS CO.,LIMITED | +8618058761490 | info@gihichemicals.com | China | 49944 | 58 |
| Wuhan Topule Biopharmaceutical Co., Ltd | +8618327326525 | masar@topule.com | China | 8467 | 58 |
| Shanghai Acmec Biochemical Technology Co., Ltd. | +86-18621343501; +undefined18621343501 | product@acmec-e.com | China | 33338 | 58 |
| Aladdin Scientific | tp@aladdinsci.com | United States | 57505 | 58 | |
| SHANGHAI KEAN TECHNOLOGY CO., LTD. | +8613817748580 | cooperation@kean-chem.com | China | 40066 | 58 |
View Lastest Price from (S)-MEPHENYTOIN manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-11-04 | (S)-Mephenytoin
70989-04-7
|
US $51.00-172.00 / mg | 99.82% | 10g | TargetMol Chemicals Inc. |
-
- (S)-Mephenytoin
70989-04-7
- US $51.00-172.00 / mg
- 99.82%
- TargetMol Chemicals Inc.
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