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ChemicalBook--->CAS DataBase List--->492-37-5

492-37-5

492-37-5 Structure

492-37-5 Structure
IdentificationMore
[Name]

DL-2-Phenylpropionic acid
[CAS]

492-37-5
[Synonyms]

(+/-)-2-PHENYLPROPIONIC ACID
2-PHENYLPROPIONIC ACID
ALPHA-METHYLPHENYLACETIC ACID
DL-2-PHENYLPROPIONIC ACID
DL-HYDRATROPIC ACID
(+/-)-HYDRATROPIC ACID
HYDRATROPIC ACID
RARECHEM AL BO 0089
TIMTEC-BB SBB007855
(±)-α-methylphenylaceticacid
(RS)-2-phenylpropionicacid
alpha-Methylbenzeneacetic acid
alpha-methyl-benzeneaceticaci
alpha-Phenylpropionic acid
benzeneaceticacid,α-methyl-
dl-alpha-Phenylpropionic acid
Propanoic acid, 2-phenyl
α-methylbenzeneaceticacid
α-methylphenylaceticacid
HYDRATROPIC ACID 95% (GC)
[EINECS(EC#)]

207-752-0
[Molecular Formula]

C9H10O2
[MDL Number]

MFCD00002650
[Molecular Weight]

150.17
[MOL File]

492-37-5.mol
Chemical PropertiesBack Directory
[Appearance]

clear pale yellow to yellow liquid
[Melting point ]

5 °C
[Boiling point ]

260-262 °C (lit.)
[density ]

1.1 g/mL at 25 °C(lit.)
[refractive index ]

n20/D 1.522(lit.)
[Fp ]

>230 °F
[storage temp. ]

Sealed in dry,Room Temperature
[solubility ]

9.9g/l
[form ]

Liquid
[pka]

4.34±0.10(Predicted)
[color ]

Clear pale yellow to yellow
[PH]

3 (5g/l, H2O, 20℃)
[Water Solubility ]

10 g/L (20 ºC)
[Detection Methods]

GC,NMR
[BRN ]

1863558
[LogP]

1.699 (est)
[CAS DataBase Reference]

492-37-5(CAS DataBase Reference)
[NIST Chemistry Reference]

Benzeneacetic acid, «alpha»-methyl-(492-37-5)
[EPA Substance Registry System]

492-37-5(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xi,C
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
[WGK Germany ]

3
[TSCA ]

Yes
[HS Code ]

29163900
Raw materials And Preparation ProductsBack Directory
[Raw materials]

Benzeneacetonitrile-->Phenylacetic acid
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

DL-Hydratropic acid(492-37-5).msds
Hazard InformationBack Directory
[Chemical Properties]

clear pale yellow to yellow liquid
[Uses]

2-Phenylpropionic acid is used in the preparation of ibuprofen derivatives for their anti-inflammatory activity. Also used in nucleation inhibitors in Dutch resolution of diastereomers.
[Definition]

ChEBI: A 2-arylpropionic acid carrying a phenyl group at position 2. It is a metabolite of alpha-methylstyrene (AMS), a volatile hydrocarbon.
[Synthesis Reference(s)]

Journal of the American Chemical Society, 99, p. 182, 1977 DOI: 10.1021/ja00443a033
The Journal of Organic Chemistry, 51, p. 4354, 1986 DOI: 10.1021/jo00373a005
Tetrahedron Letters, 21, p. 581, 1980 DOI: 10.1016/S0040-4039(01)85562-3
[Synthesis]

2-Phenylpropionic acid is prepared:
1) from Benzyl cyanide by Metbylation with Methyl iodide and Sodamide to produce alpha-Phenylpropionitrile, from which the acid is produced by acid hydrolysis.
2) from Acetophenone cyanhydrin with Hydriodic acid. 
[Purification Methods]

Fractionally distil the acid, or recrystallise it from pet ether (b 40-60o) with strong cooling (see references below). [Beilstein 9 II 348.]
Spectrum DetailBack Directory
[Spectrum Detail]

2-PHENYLPROPIONIC ACID(492-37-5)MS
2-PHENYLPROPIONIC ACID(492-37-5)1HNMR
2-PHENYLPROPIONIC ACID(492-37-5)13CNMR
2-PHENYLPROPIONIC ACID(492-37-5)IR1
2-PHENYLPROPIONIC ACID(492-37-5)Raman
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

DL-2-Phenylpropionic acid, 98%(492-37-5)
[Alfa Aesar]

(+/-)-2-Phenylpropionic acid, 98%(492-37-5)
[Sigma Aldrich]

492-37-5(sigmaaldrich)
[TCI AMERICA]

DL-2-Phenylpropionic Acid,>98.0%(GC)(T)(492-37-5)
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