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Basic Information
CAS No.: 90-49-3
Name: 2-PHENYLBUTYRYLUREA
Molecular Structure:
Molecular Structure of 90-49-3 (2-PHENYLBUTYRYLUREA)
Formula: C11H14 N2 O2
Molecular Weight: 206.244
Synonyms: Urea,(2-phenylbutyryl)- (6CI,7CI,8CI); 1-[(Ethyl)phenylacetyl]urea;2-Phenylbutyrylurea; Benuride; EPA; Ethylphenacemide; Lircapyl; M 551; N-(a-Phenylbutyryl)urea; PBU;Pheneturide; Phenuride; Phenylethylacetylurea; S 46; dl-Pheneturide; a-Phenyl-a-ethylacetylurea
Density: 1.15g/cm3
Melting Point: 149.5°C
Boiling Point: 345.1°C (rough estimate)
Safety: Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of NOx.
PSA: 72.19000
LogP: 2.46630
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Chemistry

IUPAC Name:  N-Carbamoyl-2-phenylbutanamide
Synonyms of Phenylethylacetylurea (CAS NO.90-49-3) : a-Ethyl-a-phenylacetylurea ; a-Phenyl-a-ethylacetylurea ; Benzeneacetamide, N-(aminocarbonyl)-alpha-ethyl- ; N-(Aminocarbonyl)-a-ethylbenzeneacetamide ; N-(a-Phenylbutyryl)urea
CAS NO:  90-49-3
Molecular Formula:C11H14N2O2       
Molecular Weight :206.2411            
Molecular Structure :
EINECS: 201-998-2
Index of Refraction:1.547   
Surface Tension: 46.8 dyne/cm 
Density: 1.15 g/cm3 

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 641mg/kg (641mg/kg)   Archives Internationales de Pharmacodynamie et de Therapie. Vol. 91, Pg. 437, 1952.
mouse LD50 intraperitoneal 312mg/kg (312mg/kg)   Therapie. Vol. 22, Pg. 641, 1967.
mouse LD50 oral 910mg/kg (910mg/kg)   Drugs in Japan Vol. 6, Pg. 114, 1982.
rabbit LDLo oral 1gm/kg (1000mg/kg)   Archives Internationales de Pharmacodynamie et de Therapie. Vol. 91, Pg. 437, 1952.
rat LD50 oral > 2063mg/kg (2063mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) Arzneimittel-Forschung. Drug Research. Vol. 18, Pg. 524, 1968.

Safety Profile

  Phenylethylacetylurea (CAS NO.90-49-3) is moderately toxic by ingestion. When Phenylethylacetylurea (CAS NO.90-49-3) is heated to decomposition ,it emits toxic fumes of NOx.

RIDADR 3249
HazardClass 6.1(b)
PackingGroup III