 Chemical Structure.png)
Physicochemical Properties
| Molecular Formula | C27H33CLO8 |
| Exact Mass | 520.186 |
| CAS # | 1637573-04-6 |
| Related CAS # | Ralaniten;1203490-23-6 |
| PubChem CID | 86278934 |
| Appearance | Colorless to light yellow liquid |
| LogP | 5.1 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 8 |
| Rotatable Bond Count | 16 |
| Heavy Atom Count | 36 |
| Complexity | 696 |
| Defined Atom Stereocenter Count | 2 |
| SMILES | CC(=O)OC[C@H](COC1=CC=C(C=C1)C(C)(C)C2=CC=C(C=C2)OC[C@@H](CCl)OC(=O)C)OC(=O)C |
| InChi Key | HGHVYYKTOXUQNT-CLJLJLNGSA-N |
| InChi Code | InChI=1S/C27H33ClO8/c1-18(29)32-16-26(36-20(3)31)17-34-24-12-8-22(9-13-24)27(4,5)21-6-10-23(11-7-21)33-15-25(14-28)35-19(2)30/h6-13,25-26H,14-17H2,1-5H3/t25-,26-/m1/s1 |
| Chemical Name | [(2S)-2-acetyloxy-3-[4-[2-[4-[(2S)-2-acetyloxy-3-chloropropoxy]phenyl]propan-2-yl]phenoxy]propyl] 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
| ln Vitro | For the treatment of metastatic castration-resistant prostate cancer (mCRPC), ralaniten triacetate (EPI-506) is used. It targets the N-terminal domain of the androgen receptor (AR). By attaching to the N-terminal domain (NTD), a novel target on the AR, EPI-506 is a first-in-class, highly-specific small molecule that directly inhibits AR transcriptional activity by preventing the AR from interacting with transcriptional proteins[2]. |
| References |
[1]. Revealing Metabolic Liabilities of Ralaniten To Enhance Novel Androgen Receptor Targeted Therapies. ACS Pharmacol Transl Sci. 2019;2(6):453-467. Published 2019 Sep 26. [2]. Efficacy, safety, tolerability, and pharmacokinetics of EPI-506 (ralaniten acetate), a novel androgen receptor (AR) N-terminal domain (NTD) inhibitor, in men with metastatic castration-resistant prostate cancer (mCRPC) progressing after enzalutamide and/or abiraterone. Journal of Clinical Oncology 35 (2017): 5032-5032. |
| Additional Infomation | Ralaniten Acetate is an orally bioavailable, small molecule inhibitor of the acetate form of ralaniten, a N-terminal domain (NTD) of the androgen receptor (AR), with potential antineoplastic activity. Upon oral administration of ralaniten acetate, ralaniten specifically binds to the NTD of AR, thereby inhibiting both AR activation and the AR-mediated signaling pathway. This inhibits cell growth in AR-overexpressing tumor cells. AR is overexpressed in prostate cancers and is involved in proliferation, survival and chemoresistance of tumor cells. |
Solubility Data
| Solubility (In Vitro) | DMSO: 100 mg/mL (191.94 mM) |
| Solubility (In Vivo) |
Solubility in Formulation 1: 2.5 mg/mL (4.80 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication. 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 (4.80 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication. 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 (4.80 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.) |