2,4-Imidazolidinedione,5-ethyl-5-phenyl

Modify Date: 2026-07-01 18:16:59

2,4-Imidazolidinedione,5-ethyl-5-phenyl Structure
2,4-Imidazolidinedione,5-ethyl-5-phenyl structure
Common Name 2,4-Imidazolidinedione,5-ethyl-5-phenyl
CAS Number 631-07-2 Molecular Weight 204.22500
Density 1.173 g/cm3 Boiling Point N/A
Molecular Formula C11H12N2O2 Melting Point 195-200ºC
MSDS USA Flash Point N/A
Symbol GHS07
GHS07
Signal Word Warning

Summary: 5-ethyl-5-phenyl-2,4-imidazolidinedione, Chinese name: 5-乙基-5-苯基海因, CAS number: 631-07-2, molecular formula: C11H12N2O2, molecular weight: 204.22500. A gray-white solid, melting point 195-200°C, density 1.173 g/cm³. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name rac N-Desmethyl Mephenytoin
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.173 g/cm3
Melting Point 195-200ºC
Molecular Formula C11H12N2O2
Molecular Weight 204.22500
Exact Mass 204.09000
PSA 58.20000
LogP 1.78890
Index of Refraction 1.538
InChIKey UDTWZFJEMMUFLC-UHFFFAOYSA-N
SMILES CCC1(c2ccccc2)NC(=O)NC1=O
Storage condition 2-8°C

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
MU2452000
CHEMICAL NAME :
Hydantoin, 5-ethyl-5-phenyl-
CAS REGISTRY NUMBER :
631-07-2
LAST UPDATED :
199012
DATA ITEMS CITED :
4
MOLECULAR FORMULA :
C11-H12-N2-O2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
LDTU** "Narkoseversuche mit Hoheren Alkoholen und Stickstoffderivaten, Dissertation," Leube, F., Pharmakologischen Institut der Universitat Tubingen, Fed. Rep. Ger., 1931 Volume(issue)/page/year: -,-,1931
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
500 mg/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity) Behavioral - excitement
REFERENCE :
HDTU** "Pharmakologische Prufung von Analgetika, Dissertation," Herrlen, G., Pharmakologischen Institut der Universitat Tubingen, Fed. Rep. Ger., 1933 Volume(issue)/page/year: -,-,1933
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
HBAMAK "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." (Leipzig, Ger. Dem. Rep.) Volume(issue)/page/year: 4,1289,1935
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
HBAMAK "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." (Leipzig, Ger. Dem. Rep.) Volume(issue)/page/year: 4,1289,1935

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302-H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xn: Harmful;
Risk Phrases R22
Safety Phrases 26
RIDADR NONH for all modes of transport
WGK Germany 2
RTECS MU2452000

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

~%

2,4-Imidazolidinedione,5-ethyl-5-phenyl Structure

2,4-Imidazolidi...

CAS#:631-07-2

Learn More
Literature: Archiv der Pharmazie (Weinheim, Germany), , vol. 313, # 6 p. 538 - 543

~%

2,4-Imidazolidinedione,5-ethyl-5-phenyl Structure

2,4-Imidazolidi...

CAS#:631-07-2

Learn More
Literature: Archiv der Pharmazie (Weinheim, Germany), , vol. 313, # 6 p. 538 - 543

 Precursor & DownStream

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor  1

DownStream  0

 Articles25

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Pharmacodynamics of cytochrome P450 2B induction by phenobarbital, 5-ethyl-5-phenylhydantoin, and 5-ethyl-5-phenyloxazolidinedione in the male rat liver or in cultured rat hepatocytes.

Chem. Res. Toxicol. 6(2) , 188-96, (1993)

The pharmacodynamics of rat hepatic cytochrome P450 2B (P450 2B) induction by phenobarbital (PB) and two structural congeners, dl-5-ethyl-5-phenylhydantoin (EPH) and dl-5-ethyl-5-phenyloxazolidinedion...

A markedly diminished pleiotropic response to phenobarbital and structurally-related xenobiotics in Zucker rats in comparison with F344/NCr or DA rats.

Biochem. Pharmacol. 43(5) , 1079-87, (1992)

Phenobarbital (PB) and certain structurally-related compounds induce a variety of hepatic drug-metabolizing enzymes in many strains of rats. Thus, following administration of PB (300, 500 ppm), barbit...

Active-site characteristics of CYP2C19 and CYP2C9 probed with hydantoin and barbiturate inhibitors.

Arch. Biochem. Biophys. 429(1) , 1-15, (2004)

Three series of N-3 alkyl substituted phenytoin, nirvanol, and barbiturate derivatives were synthesized and their inhibitor potencies were tested against recombinant CYP2C19 and CYP2C9 to probe the in...

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

EINECS 211-150-3
(+/-)-5-ethyl-5-phenylhydantoin
MFCD00022401

 2,4-Imidazolidinedione,5-ethyl-5-phenyl | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the safety information for rac N-Desmethyl Mephenytoin?
A: Safety information for rac N-Desmethyl Mephenytoin: 26.
Q: What is the melting point of rac N-Desmethyl Mephenytoin?
A: Melting point of rac N-Desmethyl Mephenytoin is 195-200ºC.
Q: What are the storage conditions for rac N-Desmethyl Mephenytoin?
A: Storage conditions for rac N-Desmethyl Mephenytoin: 2-8°C.
Q: What are the upstream materials of rac N-Desmethyl Mephenytoin?
A: Related upstream materials(CAS) of rac N-Desmethyl Mephenytoin: 33875-36-4.
Q: What is the CAS number of rac N-Desmethyl Mephenytoin?
A: CAS number of rac N-Desmethyl Mephenytoin is 631-07-2.
Q: What is the LogP of rac N-Desmethyl Mephenytoin?
A: LogP of rac N-Desmethyl Mephenytoin is 1.78890.
Q: What is the molecular weight of rac N-Desmethyl Mephenytoin?
A: Molecular weight of rac N-Desmethyl Mephenytoin is 204.22500.
Q: What is the polar surface area (PSA) of rac N-Desmethyl Mephenytoin?
A: Polar surface area (PSA) of rac N-Desmethyl Mephenytoin is 58.20000.
Q: What is the molecular formula of rac N-Desmethyl Mephenytoin?
A: Molecular formula of rac N-Desmethyl Mephenytoin is C11H12N2O2.
Q: What English synonyms does rac N-Desmethyl Mephenytoin have?
A: English synonyms of rac N-Desmethyl Mephenytoin: EINECS 211-150-3, (+/-)-5-ethyl-5-phenylhydantoin, MFCD00022401.

 2,4-Imidazolidinedione,5-ethyl-5-phenylfactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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