Shanghai Nianxing Industrial Co., Ltd
China
Product Name: racN-DesmethylMephenytoin
Price: Check
Purity: 95.0%
Stocking Period: 10 Day
Contact: Yang
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2,4-Imidazolidinedione,5-ethyl-5-phenyl-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
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Shanghai Amole Biotechnology Co., Ltd.
China
Product Name: rac N-Desmethyl Mephenytoin
Price: ￥Inquiry/100mg ￥Inquiry/1g ￥Inquiry/250mg
Purity: 95.0%
Stocking Period: Inquiry
Contact: Xiyao Wang
Email: 3623107365@qq.com

631-07-2

631-07-2 structure

631-07-2 structure

Name: 2,4-Imidazolidinedione,5-ethyl-5-phenyl-
Chemical Name: rac N-Desmethyl Mephenytoin
CAS Number: 631-07-2
Molecular Formula: C₁₁H₁₂N₂O₂
Molecular Weight: 204.22500
Create Date: 2018-05-07 08:00:00
Modify Date: 2025-08-23 12:40:03

Name	rac N-Desmethyl Mephenytoin
Synonyms	EINECS 211-150-3 (+/-)-5-ethyl-5-phenylhydantoin MFCD00022401

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
Storage condition	2-8°C

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

Symbol	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

33875-36-4 structure

33875-36-4

~%

631-07-2 structure

631-07-2

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

75356-44-4 structure

75356-44-4

~%

631-07-2 structure

631-07-2

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

Precursor 1
33875-36-4
DownStream 0

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