DL-Arginine can be used for physicochemical analysis of amino acid (AA) complexation kinetics and crystal structure.

Physicochemical Properties

Molecular Formula	C6H14N4O2
Molecular Weight	174.20096
Exact Mass	174.111
Elemental Analysis	C, 41.37; H, 8.10; N, 32.16; O, 18.37
CAS #	7200-25-1
Related CAS #	L-Arginine;74-79-3;L-Arginine hydrochloride;1119-34-2;L-Arginine (L-glutamate);4320-30-3
PubChem CID	232
Appearance	White to off-white solid powder
Density	1.5±0.1 g/cm3
Boiling Point	367.6±52.0 °C at 760 mmHg
Melting Point	228-232ºC
Flash Point	176.1±30.7 °C
Vapour Pressure	0.0±1.8 mmHg at 25°C
Index of Refraction	1.601
LogP	-1.79
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	5
Heavy Atom Count	12
Complexity	176
Defined Atom Stereocenter Count	0
InChi Key	ODKSFYDXXFIFQN-UHFFFAOYSA-N
InChi Code	InChI=1S/C6H14N4O2/c7-4(5(11)12)2-1-3-10-6(8)9/h4H,1-3,7H2,(H,11,12)(H4,8,9,10)
Chemical Name	2-amino-5-(diaminomethylideneamino)pentanoic acid
Synonyms	DL-Arginine; 7200-25-1; Arginine, DL-; 2-amino-5-guanidinopentanoic acid; L(+)-Arginine; MFCD00063117; 7004-12-8; FL26NTK3EP;
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

Targets	Amino acid
ln Vitro	Arginine is an alpha-amino acid that is glycine in which the alpha-is substituted by a 3-guanidinopropyl group. It has a role as a fundamental metabolite. It is an alpha-amino acid, a member of guanidines and a polar amino acid. It contains a 3-carbamimidamidopropyl group. It is a conjugate base of an argininium(1+). It is a conjugate acid of an argininate. DL-Arginine has been reported in Daphnia pulex, Drosophila melanogaster.
References	[1]. https://pubchem.ncbi.nlm.nih.gov/compound/232
Additional Infomation	Arginine is an alpha-amino acid that is glycine in which the alpha-is substituted by a 3-guanidinopropyl group. It has a role as a fundamental metabolite. It is an alpha-amino acid, a member of guanidines and a polar amino acid. It contains a 3-carbamimidamidopropyl group. It is a conjugate base of an argininium(1+). It is a conjugate acid of an argininate. DL-Arginine has been reported in Daphnia pulex, Drosophila melanogaster, and other organisms with data available. See also: Arginine Hydrochloride (annotation moved to).

Solubility Data

Solubility (In Vitro)	H2O : ~125 mg/mL (~717.57 mM)
Solubility (In Vivo)	Solubility in Formulation 1: 50 mg/mL (287.03 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	5.7405 mL	28.7026 mL	57.4053 mL
	5 mM	1.1481 mL	5.7405 mL	11.4811 mL
	10 mM	0.5741 mL	2.8703 mL	5.7405 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.