L-Pyroglutamicacid

Names

[ CAS No. ]:
98-79-3

[ Name ]:
L-Pyroglutamicacid

[Synonym ]:
EINECS 202-700-3
MFCD00005272
L-Pyroglutamicacid
hydroxy-pyridin-3-yl-acetic acid
5 oxoproline
L-Pyroglutamic acid
H-Pyr-OH

Chemical & Physical Properties

[ Density]:
1.6±0.1 g/cm3

[ Boiling Point ]:
382.4±52.0 °C at 760 mmHg

[ Melting Point ]:
160-163 °C(lit.)

[ Molecular Formula ]:
C₅H₇NO₃

[ Molecular Weight ]:
129.114

[ Flash Point ]:
185.1±30.7 °C

[ Exact Mass ]:
129.042587

[ PSA ]:
66.40000

[ LogP ]:
-1.95

[ Vapour Pressure ]:
0.0±2.0 mmHg at 25°C

[ Index of Refraction ]:
1.627

[ Water Solubility ]:
10-15 g/100 mL (20 ºC)

MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TW3710000

CHEMICAL NAME :: Proline, 5-oxo-, L-

CAS REGISTRY NUMBER :: 98-79-3

LAST UPDATED :: 199807

DATA ITEMS CITED :: 2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: USXXAM United States Patent Document. (U.S. Patent Office, Box 9, Washington, DC 20231) Volume(issue)/page/year: #4882359

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: USXXAM United States Patent Document. (U.S. Patent Office, Box 9, Washington, DC 20231) Volume(issue)/page/year: #4882359

Safety Information

[ Personal Protective Equipment ]:
dust mask type N95 (US);Eyeshields;Gloves

[ Hazard Codes ]:
Xi:Irritant

[ Risk Phrases ]:
R36/37/38

[ Safety Phrases ]:
S26-S36-S37/39

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ RTECS ]:
TW3710000

[ HS Code ]:
2933790090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

L-(+)Sodium glutamate
Boc-Pyr-OH
H-Glu(OBzl)-OH
(5S)-2,2-bis(trifluoromethyl)-1-aza-3-oxabicyclo[3.3.0]octan-4,8-dione
L-glutamic acid
(S)-N-Boc-2-pyrrolidone-5-carboxylic acid tert-butyl ester
H-Glu(OChp)-OH
Z-Glu-OBzl

DownStream

5-benzoylpyrrolidin-2-one
(5S)-5-[[[(tert-Butyl)dimethylsilyl]oxy]methyl]-2-pyrrolidinone
Z-Pyr-OH
(2S,5S)-N-BOC-5-METHYLPYRROLIDINE-2-CARBOXYLICACID
METHYL1-METHYL-5-OXO PROLINATE
(S)-tert-Butyl 5-oxopyrrolidine-2-carboxylate
(S)-N-Boc-2-pyrrolidone-5-carboxylic acid tert-butyl ester
calcium pidolate
(4R)-1-(tert-Butoxycarbonyl)-4-methyl-L-proline

Customs

[ HS Code ]: 2933790090

[ Summary ]:
2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Articles

Physiology and pathophysiology of organic acids in cerebrospinal fluid.

J. Inherit. Metab. Dis. 16(4) , 648-69, (1993)

Concentrations of organic acids in cerebrospinal fluid (CSF) appear to be directly dependent upon their rate of production in the brain. There is evidence that the net release of short-chain monocarbo...

Age-related reference values for urinary organic acids in a healthy Turkish pediatric population.

Clin. Chem. 40(6) , 862-6, (1994)

Organic acid concentrations were quantified by gas chromatography and the individual acids identified by mass spectrometry in urine specimens from a healthy Turkish pediatric population of ages 2 days...

Metabolomic profiles delineate potential role for sarcosine in prostate cancer progression.

Nature 457(7231) , 910-4, (2009)

Multiple, complex molecular events characterize cancer development and progression. Deciphering the molecular networks that distinguish organ-confined disease from metastatic disease may lead to the i...