Betamethasone acetate, formerly known as Betamethasone 21-acetate, is a potent and synthetic glucocorticoid corticosteroid and a corticosteroid ester with moderate anti-inflammatory and immunosuppressive activities. . It is the 21-acetate ester of betamethasone.
Physicochemical Properties
| Molecular Formula | C24H31FO6 |
| Molecular Weight | 434.5044 |
| Exact Mass | 434.21 |
| CAS # | 987-24-6 |
| Related CAS # | Betamethasone;378-44-9;Betamethasone disodium phosphate;151-73-5;Betamethasone hydrochloride;956901-32-9;Betamethasone acetate-d5 |
| PubChem CID | 236702 |
| Appearance | White to off-white solid powder |
| Density | 1.3±0.1 g/cm3 |
| Boiling Point | 579.4±50.0 °C at 760 mmHg |
| Melting Point | 200-220°C (dec.) |
| Flash Point | 304.2±30.1 °C |
| Vapour Pressure | 0.0±3.6 mmHg at 25°C |
| Index of Refraction | 1.571 |
| LogP | 2.96 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 7 |
| Rotatable Bond Count | 4 |
| Heavy Atom Count | 31 |
| Complexity | 910 |
| Defined Atom Stereocenter Count | 8 |
| SMILES | C[C@H]1C[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@]4(C)[C@]3([C@H](C[C@]2(C)[C@]1(C(=O)COC(=O)C)O)O)F |
| InChi Key | AKUJBENLRBOFTD-QZIXMDIESA-N |
| InChi Code | InChI=1S/C24H31FO6/c1-13-9-18-17-6-5-15-10-16(27)7-8-21(15,3)23(17,25)19(28)11-22(18,4)24(13,30)20(29)12-31-14(2)26/h7-8,10,13,17-19,28,30H,5-6,9,11-12H2,1-4H3/t13-,17-,18-,19-,21-,22-,23-,24-/m0/s1 |
| Chemical Name | 9-Fluoro-11beta,17,21-trihydroxy-16beta-methylpregna-1,4-diene-3,20-dione 21-acetate |
| Synonyms | Betamethasone 21-acetateBetamethasone acetate |
| 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
| References | : Ehling S, Baynes RE, Bäumer W. Impact of synthetic canine cerumen on in vitro penetration of auricular skin of dogs by florfenicol, terbinafine, and betamethasone acetate. Am J Vet Res. 2018 Mar;79(3):333-341. doi: 10.2460/ajvr.79.3.333. |
| Additional Infomation |
Dexamethasone acetate is a corticosteroid hormone. Commonly known as decadron, dexamethasone acetate is a glucocorticosteroid previously marketed in the USA for the treatment of inflammatory respiratory, allergic, autoimmune, and other conditions. Developed in 1957, dexamethasone is structurally similar to other corticosteroids such as [hydrocortisone] and [prednisolone]. Dexamethasone acetate has largely been replaced by [dexamethasone] phosphate and continues to be administered for a large variety of inflammatory conditions. Recently, dexamethasone has been a drug of interest in the treatment of COVID-19. In a June 16 2020 press release highlighting early results of a clinical trial, Randomized Evaluation of COVID-19 Therapy (RECOVERY), it was reported that dexamethasone reduced COVID-19 deaths by approximately one-fifth and one-third in patients on oxygen therapy and mechanical ventilation, respectively. Dexamethasone was therefore recommended as a life-saving treatment for COVID-19 patients experiencing severe respiratory symptoms. |
Solubility Data
| Solubility (In Vitro) | May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples |
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *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. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.3015 mL | 11.5075 mL | 23.0150 mL | |
| 5 mM | 0.4603 mL | 2.3015 mL | 4.6030 mL | |
| 10 mM | 0.2301 mL | 1.1507 mL | 2.3015 mL |