2-Amino-5-ureidopentanoic acid is an endogenously produced metabolite.

Physicochemical Properties

Molecular Formula	C6H13N3O3
Molecular Weight	175.19
Exact Mass	175.095
CAS #	627-77-0
PubChem CID	833
Appearance	White to off-white solid powder
Density	1.3±0.1 g/cm3
Boiling Point	386.7±42.0 °C at 760 mmHg
Melting Point	242-244ºC (dec.)
Flash Point	187.7±27.9 °C
Vapour Pressure	0.0±1.9 mmHg at 25°C
Index of Refraction	1.531
LogP	-1.53
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	5
Heavy Atom Count	12
Complexity	171
Defined Atom Stereocenter Count	0
InChi Key	RHGKLRLOHDJJDR-UHFFFAOYSA-N
InChi Code	InChI=1S/C6H13N3O3/c7-4(5(10)11)2-1-3-9-6(8)12/h4H,1-3,7H2,(H,10,11)(H3,8,9,12)
Chemical Name	2-amino-5-(carbamoylamino)pentanoic 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

Citrulline is the parent compound of the citrulline class consisting of ornithine having a carbamoyl group at the N(5)-position. It has a role as a hapten and a Daphnia magna metabolite. It is a conjugate acid of a citrullinate. DL-Citrulline has been reported in Drosophila melanogaster, Mycoplasma gallisepticum, and other organisms with data available. See also: Citrulline (annotation moved to).

Solubility Data

Solubility (In Vitro)	H2O :~25 mg/mL (~142.70 mM )
Solubility (In Vivo)	Solubility in Formulation 1: 25 mg/mL (142.70 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	5.7081 mL	28.5404 mL	57.0809 mL
	5 mM	1.1416 mL	5.7081 mL	11.4162 mL
	10 mM	0.5708 mL	2.8540 mL	5.7081 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.