Calcium dobesilate is a vasoprotective agent that is used extensively in many countries to study chronic venous disease, diabetic retinopathy, and hemorrhoidal attacks.

Physicochemical Properties

Molecular Formula	C12H10CAO10S2
Molecular Weight	418.41
Exact Mass	417.934
CAS #	20123-80-2
Related CAS #	Dobesilate-d6 calcium
PubChem CID	29963
Appearance	White to off-white solid powder
LogP	2.165
Hydrogen Bond Donor Count	4
Hydrogen Bond Acceptor Count	10
Rotatable Bond Count	0
Heavy Atom Count	25
Complexity	228
Defined Atom Stereocenter Count	0
SMILES	O=S(C1=CC(O)=CC=C1O)([O-])=O.O=S(C2=CC(O)=CC=C2O)([O-])=O.[Ca+2]
InChi Key	QGNBTYAQAPLTMX-UHFFFAOYSA-L
InChi Code	InChI=1S/2C6H6O5S.Ca/c2*7-4-1-2-5(8)6(3-4)12(9,10)11;/h2*1-3,7-8H,(H,9,10,11);/q;;+2/p-2
Chemical Name	calcium;2,5-dihydroxybenzenesulfonate
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

Additional Infomation

A drug used to reduce hemorrhage in diabetic retinopathy.

Solubility Data

Solubility (In Vitro)

DMSO : ~150 mg/mL (~358.50 mM) H2O : ≥ 100 mg/mL (~239.00 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (5.98 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 (5.98 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 (5.98 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	2.3900 mL	11.9500 mL	23.9000 mL
	5 mM	0.4780 mL	2.3900 mL	4.7800 mL
	10 mM	0.2390 mL	1.1950 mL	2.3900 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.