Betamethasone sodium phosphate is a water soluble betamethasone analogue and a glucocorticoid steroid with moderate anti-inflammatory and immunosuppressive activities. It can be used in treatment of asthma and itching.

Physicochemical Properties

Molecular Formula	C22H28FNA2O8PMOLECULARWEIGHT
Molecular Weight	516.4046
Exact Mass	516.13
CAS #	151-73-5
Related CAS #	Betamethasone;378-44-9;Betamethasone hydrochloride;956901-32-9;Betamethasone acetate;987-24-6;Betamethasone 21-phosphate-d5
PubChem CID	65478
Appearance	White to off-white solid powder
Boiling Point	669.6ºC at 760 mmHg
Flash Point	358.7ºC
Vapour Pressure	8.62E-21mmHg at 25°C
LogP	2.889
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	3
Heavy Atom Count	34
Complexity	962
Defined Atom Stereocenter Count	8
SMILES	C[C@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@@]4([C@]3([C@H](C[C@@]2([C@]1(C(=O)COP(=O)([O-])[O-])O)C)O)F)C.[Na+].[Na+]
InChi Key	PLCQGRYPOISRTQ-LWCNAHDDSA-L
InChi Code	InChI=1S/C22H30FO8P.2Na/c1-12-8-16-15-5-4-13-9-14(24)6-7-19(13,2)21(15,23)17(25)10-20(16,3)22(12,27)18(26)11-31-32(28,29)30;;/h6-7,9,12,15-17,25,27H,4-5,8,10-11H2,1-3H3,(H2,28,29,30);;/q;2*+1/p-2/t12-,15-,16-,17-,19-,20-,21-,22-;;/m0../s1
Chemical Name	disodium;[2-[(8S,9R,10S,11S,13S,14S,16S,17R)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] phosphate
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

References

: Ghasemnejad M, Ahmadi E, Mohamadnia Z, Doustgani A, Hashemikia S. Functionalized silica nanoparticles as a carrier for Betamethasone Sodium Phosphate: Drug release study and statistical optimization of drug loading by response surface method. Mater Sci Eng C Mater Biol Appl. 2015 Nov 1;56:223-32. doi: 10.1016/j.msec.2015.06.012. Epub 2015 Jun 18. PubMed PMID: 26249584.

Additional Infomation

Betamethasone sodium phosphate is an organic sodium salt that is the disodium salt of betamethasone phosphate. It is an organic sodium salt and a tertiary alpha-hydroxy ketone. It contains a betamethasone phosphate(2-). Betamethasone Sodium Phosphate is the disodium salt of the 21-phosphate ester of betamethasone, a synthetic glucocorticoid with metabolic, immunosuppressive and anti-inflammatory actions. Betamethasone sodium phosphate binds to specific intracellular glucocorticoid receptors and subsequently binds to DNA to modify gene expression. The synthesis of certain anti-inflammatory proteins is induced while the synthesis of certain inflammatory mediators is inhibited. As a result, there is an overall reduction in chronic inflammation and autoimmune reactions. See also: Betamethasone (has active moiety) ... View More ...

Solubility Data

Solubility (In Vitro)

H2O : ~100 mg/mL (~193.65 mM) DMSO : ~25 mg/mL (~48.41 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (4.84 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 (4.84 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 (4.84 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	1.9365 mL	9.6824 mL	19.3648 mL
	5 mM	0.3873 mL	1.9365 mL	3.8730 mL
	10 mM	0.1936 mL	0.9682 mL	1.9365 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.