Selenocystamine (diHCl) is a selenocysteine analogue.

Physicochemical Properties

Molecular Formula	C4H14CL2N2SE2
Molecular Weight	318.99
Exact Mass	319.886
CAS #	3542-13-0
PubChem CID	15565403
Appearance	Light brown to orange solid powder
Boiling Point	327.9ºC at 760mmHg
Flash Point	152.1ºC
LogP	2.068
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	5
Heavy Atom Count	10
Complexity	37
Defined Atom Stereocenter Count	0
SMILES	[Se](C([H])([H])C([H])([H])N([H])[H])[Se]C([H])([H])C([H])([H])N([H])[H].Cl[H].Cl[H]
InChi Key	LACKHEAUUXZNBU-UHFFFAOYSA-N
InChi Code	InChI=1S/C4H12N2Se2.2ClH/c5-1-3-7-8-4-2-6;;/h1-6H2;2*1H
Chemical Name	2-(2-aminoethyldiselanyl)ethanamine;dihydrochloride
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 Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.
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

Solubility Data

Solubility (In Vitro)

DMSO: 100 mg/mL (313.49 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (7.84 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 (7.84 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 (7.84 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	3.1349 mL	15.6745 mL	31.3489 mL
	5 mM	0.6270 mL	3.1349 mL	6.2698 mL
	10 mM	0.3135 mL	1.5674 mL	3.1349 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.