(R)-5-Oxopyrrolidine-2-carboxylic acid is an endogenously produced metabolite.

Physicochemical Properties

Molecular Formula	C5H7NO3
Molecular Weight	129.11
Exact Mass	129.042
CAS #	4042-36-8
PubChem CID	439685
Appearance	White to off-white solid powder
Density	1.4±0.1 g/cm3
Boiling Point	453.1±38.0 °C at 760 mmHg
Melting Point	155-162ºC
Flash Point	227.8±26.8 °C
Vapour Pressure	0.0±2.4 mmHg at 25°C
Index of Refraction	1.512
LogP	-2.39
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	1
Heavy Atom Count	9
Complexity	154
Defined Atom Stereocenter Count	1
SMILES	C1CC(=O)N[C@H]1C(=O)O
InChi Key	ODHCTXKNWHHXJC-GSVOUGTGSA-N
InChi Code	InChI=1S/C5H7NO3/c7-4-2-1-3(6-4)5(8)9/h3H,1-2H2,(H,6,7)(H,8,9)/t3-/m1/s1
Chemical Name	(2R)-5-oxopyrrolidine-2-carboxylic acid
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Additional Infomation

5-oxo-D-proline is the D-enantiomer of 5-oxoproline. It has a role as a metabolite. It is a D-proline derivative and a 5-oxoproline. It is a conjugate acid of a 5-oxo-D-prolinate. It is an enantiomer of a 5-oxo-L-proline. D-Pyroglutamic acid has been reported in Ascochyta medicaginicola, Rehmannia glutinosa, and other organisms with data available.

Solubility Data

Solubility (In Vitro)

DMSO: 100 mg/mL (774.53 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (19.36 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (19.36 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 2.5 mg/mL (19.36 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	7.7453 mL	38.7267 mL	77.4533 mL
	5 mM	1.5491 mL	7.7453 mL	15.4907 mL
	10 mM	0.7745 mL	3.8727 mL	7.7453 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.